"I still don't understand why men can't be feminists - surely if you support gender equality you're a feminist? Men can also be the victim of sexism. Can you not support racial equality if you're white or sexuality equality if you're straight?"
In my experience, men who have thought deeply about these issues prefer to call themselves "feminist allies" - acknowledging that they do not have shared experience. I would prefer this too, personally. But I'm not going to get bent out of shape if a man calls himself a feminist. So long as he doesn't use any discussion to demand his right to the label, or proceed to tell women how to do feminism. As someone wise recently said "Men don't need space in feminism- they need to take the space they already have and make it feminist"