I'll take a flat stomach with even a little definition anyday over a jelly roll. Sorry bro!
For a girlfriend, sure...a flat stomach is preferable.
For a hot, busty, curvy fuck friend...the more curves the better! Girls are always much, much hotter if they are just natural and sexy. If a girl needs to work out 3 hours a day to be hot, fuck it. So what? I'd rather a girl who is natural, sexy, and has a few extra pounds to some wacko who only eats salads and works out daily. Big deal. Being skinny = being hot. Porn girls have gotten so odd and plastic looking at this point that it is a turnoff. Give me the 80s with natural girls, a bit of bush, and whatever tits they naturally have.
Judging by your screename, you might just be a fitness freak, eh?