Cast your mind back to 1957, the Treaty of Rome was signed by six nations. It consisted of nothing more than an elaborate front page, a signature page, and (due to "technical difficulties") a whole wad of blank paper.
Almost 50 years later the European Constitution was signed. It was a solemn and impressive ceremony at the heart of Ancient Rome. All that remained was for the people of Europe to approve the pact which was made in their name. The Dutch and the French, however, deigned to disagree, voting the whole thing down in their respective referendums.
Regardless, the project pushed on, and was quietly repackaged, much of the text lifted word-for-word into the Lisbon treaty. This time it was billed as a "tidying up exercise". No need to bother the proles with a vote on the subject. Except for Ireland, who voted the "wrong" way, and were told to vote again.
If you happen to be one of the 42% of people who bothered to vote for your MEP, you might find some comfort in the fact that the people who ride roughshod over the parliamentary democracy and court system of the UK are subject to some democratic oversight. But this is an illusion. The appointed EU Commission are bound by EU rules to represent "the project", not their respective nations. MEPs cannot instigate legislation. Their function is provide a fig leaf of democracy to the whole sham. The legislation they do get to scrutinize, they invariably nod through.
There are lots of reasons to leave. The crippling of the economies of Greece, Italy, Spain. The parachuting in of unelected and unaccountable bureaucrats into the highest seats of power in Greece and Ireland to pull the levers of power. The appropriation of Cypriots' savings. The hounding to an early grave of a market trader who dared to use traditional weights and measures. The unelected Jean-Claude Junker pontificating on what would happen if the Austrians voted for the wrong candidate in their recent election. The breaking of their own rules in granting bailouts. The ridiculous blue flags on everything that has been built with "EU" (ie YOUR) money. The control-freak legal system that thinks that unless something is regulated it cannot be permitted.
I could go on, but I fear you might guess which way I'm voting.