They don't...but they do? What a ridiculous reply!
My uni has started a food co-op and everything there is vegan. It's fantastic! A real lesson to anyone who thinks vegan food is essentially tofu and salad. I had a pie there today and I freaked out because I thought it had meat in it (I'm a vegetarian too, going vegan when I leave home), but it turned out to be the richest, meatiest tofu I have ever had. It was amazing - tasted better than the real thing!
I don't get the problem people have with vegetarian food. Even when I was a meat-eater, a vegetable lasagna, pasta with vegetable sauce, vegetable soup, or a delicious salad were all perfectly viable and delicious options! A meal doesn't have to have meat to be amazing.