Friendships are built around the things that 2 people have in common. It's the same in the JWs. You have something in common to discuss and to "voluteer" your time to help that effort that is different from everyone else, which is why when you are speaking to a JW, once you get past the meeting, the Assm, your recent RV, or a comment your BS made............you are out of things in common and the conversation lulls. Cliques develope within the congreation (and we complained when we were not part of them) among small groups of individuals who have something else in common beyond the JW doctrine. Golfing. Boating. Hunting. Fishing. However, these are always required to take 2nd place to organizational things, thus if you end up OUT of the Org, then you are OUT of the clique as well.
If you are in a small community there are groups that volunteer their time for community betterment such as the JayCees, Kiwanis Club, etc.
Or, if you have an illness there are often "support" groups for those dealing with it; breast cancer; diabetics; AA; etc.
People in those groups break off into their own cliques of people who have other common interests: golfing, boating, etc etc