Re: Would you like to be fried with that?
Oh dear. Where did you get these arguments? Christian Apologetics for Dummies?
Your comment reeks of contempt for those with a less religious world view. If I were religious, I might even be tempted to warn you about the deadly sin of pride, but I'm not, so I won't. You also demonstrate a level of confidence which is both remarkable and ill advised in someone so ignorant of their basic argument. So, as you have been so disdainful of those with a rational world view, I won't make too much effort to be polite.
Before I get on to my main point, let me say that it's not the fault of others that you lack the imagination and intellect to understand how a sense of morality might evolve. There are many mathematical models demonstrating just that, but I don't expect you to aquaint yourself with them as it might make you confront reality. The fact that we see cooperation and collaboration in other species, especially primates (even in Wolves) might also cause you distress, after realising we are just another species! Watch yourself - that's your sin of pride showing again! But interestingly, that 'inbuilt morality' you incorrectly ascribe to God, breaks down in many situations. Situations that threaten our safety or awaken our tribal or territorial instincts. We also have FAR less empathy and feel FAR less protective of humans that aren't in our social group and/or don't look like us. This is exactly what one would expect from evolved behaviours.
Also, your conflation of biology with politics is a nonsense, as is your assertion that an atheistic materialistic worldview is a harsh reality. It's fine for me thanks, cause I'm a grown up. That said, you should realise that the extent to which you would like to believe in a certain fluffy, smiley and happy worldview has absolutely no bearing on whether it is actually true. Wishfull thinking, it's a bugger isn't it?
Anyway, on to my main counterpoint to your teenage theology, you said:
'Society would descend into something like The Purge mixed with 1984, I'd imagine. Yet it doesn't. And surprise, it's because of an innate morality in people, not because of the eyes of the law.'
Surpise! Empirical reality provides us with copious amounts of evidence to the contrary. Are you not familiar with the 1969 riots in Murray-Hill, Montreal: https://en.wikipedia.org/wiki/Murray-Hill_riot. Police and firefighters went on strike and within hours, social order disintegrated. To quote Steven Pinker:
"As a young teenager in proudly peaceable Canada during the romantic 1960s, I was a true believer in Bakunin's anarchism. I laughed off my parents' argument that if the government ever laid down its arms all hell would break loose. Our competing predictions were put to the test at 8:00 a.m. on October 7, 1969, when the Montreal police went on strike. By 11:20 am, the first bank was robbed. By noon, most of the downtown stores were closed because of looting. Within a few more hours, taxi drivers burned down the garage of a limousine service that competed with them for airport customers, a rooftop sniper killed a provincial police officer, rioters broke into several hotels and restaurants, and a doctor slew a burglar in his suburban home. By the end of the day, six banks had been robbed, a hundred shops had been looted, twelve fires had been set, forty carloads of storefront glass had been broken, and three million dollars in property damage had been inflicted, before city authorities had to call in the army and, of course, the Mounties to restore order. This decisive empirical test left my politics in tatters (and offered a foretaste of life as a scientist)."
Then there's the folks in New Orleans after hurricane Katrina. Peace and order only returned when 6500 National Guard troops arrived to remind people of their "innate morality".
Dreadful things occur when law and order truly breaks down - the Srebrenica Massacre, the Rwandan Genocide and the like occurred in such circumstances. This also happens when leadership is morally corrupt and allows or encourages such acts. Clearly neither 'inherent morality' or any 'God' that could enforce it, was effective in preventing twisted leaders being above the law. Tellingly many of the worst attrocities of recent times were committed by one religious group on another e.g. the Armenian and Greek genocides, or the religious massacres in the Punjab around the time of Indian partition. Was God on holiday?
To answer your main rhetorical question: 'who's stopping somebody who's very powerful as to be above the law (therefore a favorite of natural selection), who also happens to believe that "anything goes", from acting on this belief?'
No-one, that's why monsters like Hitler, Stalin, Al-Bagdhadi (ISIS), Attaturk, Idi Amin were able to act so inhumanely to their fellow human beings. Some were religious, some not, but that ain't the point - no one was there to control them and 'God' Certainly didn't show up to fix things before they went out of control.
To quote David Hulme: 'Epicurus’s old questions are yet unanswered. Is he willing to prevent evil, but not able? Then is he impotent. Is he able, but not willing? Then is he malevolent. Is he both able and willing? Whence then is evil?'
On top of all that is the copious evidenence that the religiosity of a nation is correlated with many negative measures of societal health. Religious countries are more violent, poorer, less altruistic, less educated and less happy on average than non-religious countries. The homicide rate of the 10 least religious countries is 1.01 per 100,000, that same stat for the most religious countries is 5.1! Even within the US, the most religious states have higher rates of homicide, child mortality and violent crime.
All you need to do is look at the most religious regimes. There have been and remain many, and ISIS is an excellent recent example. The abject brutality, cruelty and inhumanity of that regime are almost beyond description. Thankfully they have all but dissapeared now. But the truth remains that those scumbags ran their fiefdom in a way that was much closer to the letter and the spirit of the holy scriptures than any other Abrahamic religious regime of recent times. So WHO IS stopping them from being above the law? Again, no one.