Chick flicks are to females what mindless popcorn movies are to males, for the most part. Designed to appeal to them on a certain level, even if they lack good writing, acting, directing, et cetera.
I like some really stupid movies because they at least feature things being blown up with really big guns and bombs, and hot women.
Some women like really stupid movies because they at least feature nice, yet hunky+funny+responsible+cantotallydancesowellOMG leading men, and girly friendship stuff.