I don't expect that everyone will be into reading feminist theory. But it's essential to at least know some basics. The danger otherwise is the classic one for men, of men ignoring, trivialising or attacking women's lives and perspectives, and accepting the dominant myths. One of the best ways of informing ourselves is to read feminist theory - books, magazines, journals. I can't stress enough how important it is that we understand what feminists are saying.
Feminist theory is amazing.
It is essential for example that men learn about women's experience of being raped or sexually harassed. When I read women's experiences, it helps break down the patriarchal myths about rape. Guys like me, who think of themselves as quiet and aware are likely to be just as dangerous as guys who are quite upfront about their sexism. And regardless of how 'nice' we are, we still gain power in very material ways just by being men in a patriarchal society. Men may use a knowledge of feminist theory in oppressive ways.