For me it really isn't about the looks. I've had lovers, who were young and fit, young and fairly overweight and one, who was quite a bit older than me and while he wasn't really fat, he wasn't in good shape physycally. While it was a lot more fun hiking with the fit ones (especially as I don't have too much endurance myself and it was nice to have someone carry my stuff for me once I got really tired ;-) ), I don't think the satisfaction in bed was correlated to their fitness. Of course some things were uncomfortable with a heavier lover, but he had no trouble with making me shiver and moan. As for my fantasies, I would say it makes even less of a difference to me. I imagine the men by their character, their social position compared to mine and their behaviour.