>>25623014A decently proportioned ass is kinda essential for a good figure, however that does not mean necessarily mean that they should be very large, just well shaped.
Like a Hank Hill lookin' ass is a deal breaker while a flat chest isn't.
That said, great breasts have that special magic that fills you with happiness that I've yet to notice with asses.
A nice ass just makes me horny, while nice breasts do so much more.