Probably a wee bit late into this conversation... I've always been a vegetarian (no eggs also).
Over last year and half i have been on a journey to get healthy (mentally and physically). Have lost 25% of my body weight while maintaining or increasing muscle mass. So it perfectly possible to get all the proteins needed on a veggie diet, even more so if you eat eggs unlike me. Also recommendation is around 2g per lb of body weight or 1.2-1.6g per kg of body weight if you are resistance training and trying build/maintain muscles.
But one thing to be aware of in veggie diet and more so with a vegan diet is vitamin B12 deficiency.
Having said that.... I am veggie for personal reasons, I wouldn't recommend it to anyone. It's like playing life on "hard mode". But I have friends who are the other extreme in that they eat nothing but meat. That is also not good.
Having a balanced diet with some or "responsible" amount of meat is probably the best way i think.
Each to their own though... vegan diet is just impossible for me to maintain. I don't use supplements, not even for getting my required protein intake.
