Our two daughters, the Son In Law and Daughter In Law have all gone vegan, though the DIL will eat an egg and occasionally some fish or even a bit of meat.
It was an abrupt change for one daughter & SIL... when they were here last spring, he'd eat 6 eggs at breakfast, all manner of meat & fish... granted, lots of veggies, too, but when they came back in the fall... no meat, no eggs, no dairy. Sure put a cramp in cooking the Thanksgiving meal... well actually, not that much of a cramp... just had to make alternative 'vegan' dishes, when in the past, things had been heavy on cheese and dairy, not to mention a ham & turkey.
I'm learning to cook some vegan stuff, 'cause I want the kids to want to come home to visit, but I'll be damned if I'm gonna go that route! Yeah, we can make some passably edible vegan stuff - and what the wife and I cook is IMO, way better than the chickpea & butternut squash curry crap that the SIL usually whips up.
I'm afraid with the way the Xiden administration's policies are driving prices up, I'm gonna be relegated to making some 'fake meat' seitan crap and using it in place of ground beef. Plenty of deer out here on the farm, so if I have to, I can always go poach one if I gotta have some meat. Measly little 16 day modern gun season doesn't touch the population - been seeing 30 or more most evenings, in the 10 acre wheat/rye field below the house.