Oompa: For folks like you who have invested decades of their lives in the organization, it's not the least bit surprising that it's hard to move on. If your long-time friends suddenly abandon you, how could you not feel hurt?
Of course, they're probably hurt and confused too. They probably blame you for "turning your back on Jehovah" or something similar. I know that I had those feelings years ago when, as a believing JW, some people close to me left the organization. These individuals didn't leave because of doctrinal issues. Rather, they were DF'd for "immorality" and were enjoying their "worldly lifestyle" and not making an effort to get reinstated. I recall telling one of these folks that it hurt me that he was choosing this lifestyle over our friendship.
Have you reached out to your JW friends in a social way? If not, perhaps they think that you've abandoned them? Who knows, if you reach out to them you might be pleasantly surprised.
Of course, this is all assuming that you want to hang onto your JW relationships. As is well-documented on this site, maintaining relationships with JWs can make it more difficult to fade (if you don't keep your mouth shut, you could end up in a committee). But if you want to try to keep these relationships, perhaps you should be pro-active.