Good thread topic. Sometimes I wonder when looking at all the debates and discussions we have on this forum about "true Christians", if we're looking at it too hard? I say that because we'll examine in depth and discuss debates for multiple pages on subjects such as 607 vs 587, or the Trinity, or fractions vs whole blood, etc.., and I wonder if we're making a bigger issue out of this than necessary. The reason I say that is because Jesus said His disciples would be recognized by the love they had amongst themselves. It doesn't get much simpler than that. I don't want to generalize JWs as not being loving, or incapable of true friendship, because I know plenty of JWs who would break their necks for you and give you the shirt off of their back.
At the same time, I know plenty who I wouldn't trust as far as I could throw them. When dealing with an elder body, its similar to being in the mafia. Much of that is the end result of the culture that the WT encourages amongst congregations with statements such as, "keeping the congregation clean", "don't offend the conscience of others", or "are you doing enough." In that same order the WT has created an atmosphere of suspicion, competition, and anxiety. Another thing is JWs are so busy with field service, and keeping up with their study, and meetings, that its hard to build relationships that are worth anything as you just don't have time. I got asked to play basketball this weekend, but I just don't have the time and I'd love to go. Being amongst JWs is like having a job that you hate and working for an overdemanding company with serious implications for not keeping everybody happy and playing your political cards right.
The best friendships I've had with people have been with nonJWs. They didn't judge me, didn't expect anything from me, and they didn't view life as a neverending task.