The referendum was purely advisory. There was no mandated turnout for the decision. The EU was and is not willing to negotiate (Cameron came home with NOTHING before the referendum) This was all perfectly clear beforehand.
There was and is no defined path for exit. (same as with the scottish ref, which her whinginess wants to re-enact). Voting leave was taking a risk that there was a better way. Voting remain was taking a risk that life outside the EU would be worse than in it.
yes, it was not a simple yes/no question and thus was not suitable for a referendum. Blame Cameron.
you have to be seriously gullible to think that there are believable stats for the split of leave/remain by anything other than area. All the other rubbish floating about (Buzzfeed? you get your information from that? Dear oh dear...) is purely extrapolation from small opinion polls. An extension of the advertising horseshit in the beauty ads, although clearly many believe that too.
BTW despite big turnout, an enormous chunk of the electorate simply didn't care.