Actually, you'd be surprised how many people really won't miss you once you quit for good. It is tougher if you have a lot of JW family that keep harrassing you but as for the so-called "friends" at the hall...once you miss so many meetings, they'll pretty much forget about you. Even people who you thought were pretty close to will disappear.
I can corroborate that. It makes me so glad that I didn't completely sever ties to non-JW friends, who are all much less backstabby than they all were.