Based on my exposure to girlgaf and irl women I'm in the minority preferring big hulking dudes quite often. Most of them prefer a build that's toned but not bulky. Like Brad Pitt in his prime or something.
I also want to point out that I'm not suggesting very muscular men would have a hard time finding dates.
1) Even if only 15% of women were attracted to very bulky men, in a large world that's still an enormous number of women. We'd be talking about 20 million women in the US alone.
2) Of the women who do like such men, they often particularly and especially like them. I'm not sure which is better; being "generically" handsome and having 50% of women at least be receptive to you, or being very muscular and having 15% of women be very in to you.
I point this out just so it doesn't seem like I'm "picking" on very muscular men or trying to diminish them relative to other body types.