My own reasons are mostly the consistency of ethics in environment sustainability and global poverty, with side benefits of taste and health. This is something that I’ve been increasingly leaning toward and now I’m in control of my own meals again I can be freely vegetarian.
I’m not going to be strict or even necessarily consistent. I have leather shoes and bags and wristbands. I’m probably not going to worry about vegetarian cheese or gelatin, or shrimp-based curry paste, I’ve been vegetarianing for not even three weeks and I’ve eaten meat five times (partly because travelling, and partly because refusing meat cooked for me when I’d been a vegetarian for 48 hours seemed pretty rude).