because a lot of people are hairstruck. they see a girl and think she's automatically prettier because she's blond. I get what your saying because its like being colorstruck for black ppl. I get a lot more attention from black men in the wintertime/fall when I'm paler even though I look the exact same just a few shades lighter
hair can do a lot for a person,blonde probably compliments your features better,to be honest,brunette hair can make most people look mousy/plain. but I'm just giving guys the benefit of doubt,it might just be cause ''lolz blondz are leik so hot''
That happened to Marilyn Monroe, she was a natural Brunette then she dyed her hair blond. Sometimes the color that is not naturally yours can compliment your features better but I think this is more uncommon. If you do find a man who likes you more for your brunette hair then he is more of a keeper because he likes your natural looks.