Short version: I didn't miss meat. I'm cool with eating significantly less meat, but will probably never be a true vegetarian.
It also didn't hurt my athletic performance as I finished my first tri first in my age group. I don't feel any different in terms of endurance or performance. Given that this vegetarian experiment was easier than I thought, my new plan of action is to be mostly vegetarian. I'm don't plan to completely abstain from meat for life (true story, Taco Bell texted me. They miss me). I hope to eat meat no more than once a month. While the true vegetarians/vegans out there I'm sure are giving me the side eye, studies show that less meat is better, and we all have to start somewhere.