I have been vegetarian for over 20 years and have tried to be Vegan but never quite get there. In my family I have a nearly vegtarian coeliac DH, one vegan son and one vegetarian-trying to be vegan son ( they don't live at home but visit frequently. Food that is both gluten free and vegan is quite hard to do, though I prefer that we all eat the same thing when we are together. My main reason is animal welfare. I have cut out dairy milk now and eat very little cheese, but eggs are difficult and a sticking point for me.
I make lots of vegetable curry, easy to make and suitable for us all.