The problem is that feminism means vastly different things to people. To some, it means supporting a woman's right to vote, to pursue a career of her choice, to run for elected office, etc.  If that's what feminism entailed, I'd call myself a feminist. But then you have others who will go into a day care center and get upset if they see a boy playing with a truck while a girl is playing with a doll, and get upset about society foisting gender roles on them, people who get upset when conventionally attractive people have more opportunities for dating, or people who see privilege in others who haven't made poor choices they have. People like this have sort of taken over the "feminist" label, and for that I wouldn't call myself one.