One problem is that if women have a big ass, you cant penetrate them as deeply as a woman without fat padding. If they have thick thighs, missionary becomes almost impossible or at least awkward.
I also think 'thick chicks' can be good looking and I have ****ed a few now...its never as fun as fvcking a slimmer girl.
If a girl has a big arse you will literally lose 3 inches off your **** effectively... understand what I mean? You go all the way in, but your only half in really, because she has 3 inches of ass padding.
Also they are less flexible, harder to move around, and if they ride you its just too much weight. I just hate how they move slowly in bed, seeing a fat woman position herself on the bed is gross, when you've seen a slimmer chick literally hop around on the bed getting in position.
anyway, I think the reason guys like plump girls is because their feminine curves are exagerrated (sometimes) and the sexual shape of the woman is more easily seen. But once you get a woman's clothes off, a girl who looks skinny in clothes can have some nice curvature and a girl with nice curves in clothes has... sprawling fat packets everywhere. I dont like fvcking them.