I'll eat just about anything, and I'll cook according to what I've got in / needs using up without consciously thinking. So one day it could be a chicken & bacon casserole, and the next it could be a vegan curry, then it could be something like Turkish eggs or tuna & sweetcorn pasta bake. All that matters is that it's a tasty and satisfying plate of food, and that I'm not hungry.
I definitely don't eat nearly as much meat as I used to - I'd much rather have quality over quantity, and I tend to put meat *into* things rather than have it as a centrepiece. I'll also do things stretch out mince with lentils, but that's because I adore lentils in all shapes and forms, swap half the meat in a curry for chickpeas or use up cooked chicken to add to enchiladas and the like.
I don't think I'd find it difficult to drop meat altogether and go veggie / pescatarian, although I'd miss some things fiercely - like bacon and black pudding and really good charcuterie. But vegan? No. Absolutely not. While I do like scratch-cooked vegan food (especially Indian), it's the look-a-likey stuff that *really* does my head in. I've tried things on yellow sticker because I'm the sort of person who will always try something once before forming an opinion, but they've largely been misses as opposed to hits. Some things I've tried have been genuinely unpleasant.
Oddly, when I do eat out, I tend to go for the veggie options.