Dunno, never really engaged with that issue. I remember from the referendum people saying it would make it easier for extremist parties to gain influence. Presumably if 2015 had been PR, then UKIP would have been much better placed to ensure we don't end up with a fake Brexit.
That would have been good. But then maybe it would allow ovarian cancer deserving c*nts like the women's equality party to gain influence. That would not be good.