Like the original poster, I never really had an appetite for meat. In my childhood my brother and I developed a rather elaborate bartering system, trading meat (mine) for vegetables (his). The health benefits of a vegetarian, then vegan, diet were of course a consideration as an adult, but my motivations were somewhat less practical. Vegetarians, especially vegans, tended to smell better than non-vegetarians. I realise this is a debatable issue, but in my experience it tends to be true.
As for a favourite veggie food, I would have to say a vegetarian pho, or any one of Heidi Swanson's (101cookbooks.com) recipes.