"Just for the sake of good all debate, don't most of us have names as a result of a patriarchal society, ie our father's names?"
Well, our names were inherited from our fathers, but that is also the case for any man who's about to get married. Yet, curiously, you very seldom hear of men choosing to change their name upon marriage on the grounds that "It's my father's name, not mine." It's funny how men are understood to own their own names, but women are not. A hangover, I suppose, from the days when women did not go through higher level education, work in professional jobs or enter academia.
We as women own our own names, because they are connected with everything we have done in life in the public domain--whether that's getting a degree, owning a business, publishing a paper or working outside the home.
OP, seriously, don't change your name if you don't want to! My own experience is that even among women who were really "into" the idea of name-changing during their engagements, a few years down the line quite a large percentage of them end up regretting it. And if you are already against the idea now, you will almost certainly really regret it.
And once you have changed your name, there is no going back (well, pretty much) if you have regrets later on. In legal terms, yes, you COULD change it back to your maiden name, but you will look like a twit and everyone will assume that your marriage is on the rocks. Talk to your fiancé and explain why you don't want to.