Re: What a waste of parlimentary time.
"What exactly have these people got against human sexual freedom?"
It's the old attitude of "If you are not part of the solution - then you are part of the problem".
In general UK society is getting very intolerant and is losing its sense of nuances. Sex in particular is a subject on which "responsible" members of society are expected to support any prohibitions. People are afraid to take a nuanced position for fear that they will be accused of being "one of them".
If they really are "one of them" - then they will be even more vociferous in supporting prohibitions.
This has two possible roots. Firstly they fear being "found out". Secondly they are afraid of their own dark desires - by imposing controls on others they also hope to control themselves. There is often a self-assumption that if they are teetering on the brink of temptation - then the "lesser mortals" would not only have the same temptations but would undoubtedly succumb.