If you want to be vegan, more power to you. But please talk to your doctor first (and optionally do a bunch of reading from non-specifically-vegan sources about how the food is grown). The nutrition-feasibility, health benefits, and current, real-world environmental impact are frequently and loudly lied about by vegans.
Same experience here. Vegans are usually chill, but people act like a dog defending their food bowl when it comes to eating meat.