Like Gugny said, for women I think a lot of the appeal of a Bills game is the social/party atmosphere. I know a few women that are big fans of some NFL team but also don't care to talk about the details of football. Many of them won't go out of their way to watch a game that isn't on local cable (like going to a sports bar on Sunday or purchasing Sunday Ticket), but they'll spend lots of money going to 3-4 games a year. Nothing wrong with any of that (sometimes I think I'm insane when it comes to the Bills) but it just kind of is.
With regard to a female space here, or us somehow excluding, intentionally or otherwise, women from our discussions, the reality is that male spaces are vanishing to the point where there are almost none left. I have no issue with women posting here (Lori, for example, contributed quite a bit), but let's not pretend that having a place where guys like to chat with other guys about something that guys tend to enjoy more than women is a bad thing.
Also, "there are no girls on the internet."