I have the same problem with sweets, the last chocolate that I ate was like when I was 10. I don't even eat birthday cakes, it's too greasy for me.
But both of us are meat eaters, my wife loves a good steak, and trust me you can't see it on her, she is very fit. I also like a good steak or some chicken legs with sauce, but I started realizing that vegetables taste good too.
I have experimented with various vegetable based foods last week and I really liked some of them, so there is something to this vegetarian diet too.