To be honest, on the day, I actually found myself staring down at the ballot paper with a totally blank mind. I asked my gut, and my gut said "LEAVE!!!". I've rationalised it since, though with the arguments falling into essentially two camps - the Remainers being emotionally hurt at the thought of leaving, with the business and justified political arguments being that "this will take the very devil to untangle - can't we just stay?" whilst the Leave arguments seem to be at a fundamental notch above, equally emotional but at a "if we don't leave our votes will count for nothing as we will only have sock puppets to vote for". I think the Establishment was genuinely shocked at the result, but down here (I'm in the S West), there's a huge resentment against the EU for the loss of fishing rights, and only some mild mutterings about immigrants, as there are few here. As time has passed, I've also known some people who voted remain, have switched to the Leave camp, so I think a second referendum would also have a shocking result.
Amongst my son's generation, the EU Copyright directive articles 11 and 13 (basically shutting down Youtube and meme culture for control reasons) is having a huge impact amongst teens, and I've an old mate who's a passionate leaver (and slightly autistic) who can quote you every single instance of why the EU is really the coagulation of Europe into the USSE.
I'd better get making daggers, then - or at least power my way through Bleak falls Barrow and level up that way.