I don't know if such an impression is what much of the wider public receive from most feminists, so I can only speak for feminists like me : keen, excited people intoxicated by having found something we can believe in with a sort of no-holds-barred conviction and optimism. It is enrapturing, to say the least, to finally find a cause still flexible enough to include our own, individual definitions of what it means to be a feminist in the 21st century. And unfortunately it is only too easy to forget that the rest of the world hasn't willingly inundated their minds with similar feminism-related indignation.
So, on behalf of us feminists who are a bit too eager to evangelize, perhaps even threatened by the seeming insurmountable task of reconditioning society and feeling like the world around us is consistently ignorant enough to use words like "slut" and "whore" and expect us to be insulted, I'm sorry for being "preachy". I really don't mean to be. But if you'll give us feminists a fair chance, maybe try not to lump us into an undifferentiated mass of female chauvinists, I'll do my part and try not to convince you too often of what my heart and soul believes in.
Image credited to http://www.keepcalm-o-matic.co.uk/p/keep-calm-and-apologize-17/