It's a lot like the Civil Rights movement. Both of these things started out with denands for legal equality. Women got this, basically, with the right to vote. Then they both focused on changing societal views on their groups. Thus, it became less crazy to envision women leaving the kitchen and getting a job of their own, and so women entered the work force.
But by then the movements had basically succeeded in acheiving their goals, yet didn't really want to disband. So they started coming up with new things to decide it was their job to fix. They started concentrating on equality of outcome rather than equality of opportunity. Sometimes they sought to be more than equal (affirmative action, etc.). So my answer is, it depends on what you mean by feminism. Up through the 70s, it did a lot of good. Most people who claim to be "feminists" nowadays, though, are just like the modern day "civil rights" activists, and aren't really worth listening to IMO.