I enjoy lifting alone- as in, no partners or friends. The only problems I have with any of the two gyms I go to are these:
Main gym: Just a squat rack with no adjustable safety pins. Gotta hit depth and no lower(which I tend to squat about an inch below parallel). That causes a problem if I'm not used to it. Easy to adjust though.
School gym: Other than it often being annoying to be in there, there are only two things that effect my lifts: There isn't chalk allowed. That's why I have always made it a point to come home on the weekends to deadlift. I'm too dumb to figure out how to use straps.
Secondly are the bench presses. The j-hooks have an incredible incline. I have to press the bar up, and then pull it out, which causes me to lose a good bit of tightness. That of course causes an effect on my lift.
Other than that, going somewhere else to train doesn't or hasn't really effected me in a great deal yet if it ever will.