It's difficult for vegetarians to get enough protein. Also, if you think about the foods that are most unhealthy..... they have absolutely nothing to do with meat.
Bread, pasta, french fries, sweets, macaroni & cheese, cheese pizza.... ect, ect ect...
most of the women ive ever dated were vegetarians, i tried it for a year because of challenge, went an entire year without any meat, was in the worst shape of my life.