Humans are generally gregarious, enjoying interaction. Of course you're going to feel bereft when leaving one of your social groups, such as the JWs. The greatest difficult with that particular one is that it demanded exclusivity, meaning that there was nothing else to fall back on.
The secret to reducing the pain is to develop other social groups in your life, even though the WTS frowns on such conduct. Most real-life people do so. They have:
- hobbies that sometimes entail being part of a group;
- internet Forums that offer a limited form of communication, similar to an advanced form of penpals;
- groups of work colleagues and friends with whom they interact; and of course
- religious groups that often need not be limited to one denomination.
We all have a variety of "circles" in life, sometimes known as "spheres of influence". If we cultivate these we will often find that when one particular social group disappears, the others take up the slack and/or others take their place. This is a natural sociological process.
I feel that as ExJWs we can use our experience to advantage, if we apply it to educating folks to the dangers of clichs. Instead of joining narrow groups we can be more inclusive, which breeds tolerance. At that level I just view the WTS as a rather insular clich that snubs and shuns its outcasts, even to the detriment of family bonds. It is especially in this later case that I find it so deplorable, and even hypocritical in the context of 2Tim.3:3 ("without natural affection").