I work in a male-dominated field and I find it much easier to socialize with the guys than the girls because its easier (the mean girls are REALLY mean). I do enjoy going to lunch with my work friends, and sometimes we'll have a quick drink (45 minutes or so) after work to socialize. I commute and lose time that way, and am always busy with kid stuff so my work friends satisfy my need to be social yet fits in with my schedule.