Because that is how it is. This forum is for everyone, thus bitcoin is for everyone it may seem that males are more knowledgable than females or should I say males are far more interested on doing this thing rather than females. Because there are no gatepass or requirements even existing on this for you to start, you only need to have a sense, perseverance, and most likely a hard work on doing this stuffs because this thing is not a joke for us to troll around.
We don't know who many women here, but majority of us here are man and it is not strange to know that. Since man, are more exposed in technology, whenever they have time they are searching for the update and news unlike women who are giving most of their time updating their status (not all). And most the women focuses if not in their career but in their home and children.