Yes of course you can get proteins without eating meat. There's a reason, however, that _most_ vegetarians and especially vegans are not very muscular, even though they may be trim.
All proteins are not created equal. I get low fat proteins from lean red meat, fishes, egg white, chicken, turkey, whey, fat free milk, black beans, etc. The mixture is important for strong muscle growth. Vegetable proteins tend to be the least useful in muscle production.
I don't really buy the "more healthy" aspects necessarily, either. Yes, vegetarians and vegans tend to be slimmer, however, you can eat meat products and still keep your fat intake low. I eat red meat, I also train from 3-5 hours a day 6 days a week including a 12km run every morning. How are you going to tell me the average vegetraian is "more healthy" than me?
__________________
.
|