It's funny. In my group of college buddies, occasionally one has dated a blonde but NONE of them married a blonde.
I know a lot of guys who think that blondes are fun to play around with but are not really marriage material unless they want a trophy wife. Kind of like the women who like bad boys to play around with, but wouldn't marry one. A lot won't admit it but many guys do think that blondes are missing a little more upstairs.