These same parties can be fun if you accept that you're not going to meet a romantic partner at a work party. There are a thousand other great social circumstances which are more balanced and "productive" in this area.
The homogeneity of this environment is aggravating. It takes a lot of work to break out of it. I'm not sure what it is about geeks, but much of our community seems to take pride in being about tech - and only being about tech.
Statistically, that area is just bad from that point of view.
In any event, "party" and "work" are two different circles in my book, to use a recently highly visible metaphor.