This thing (along with Jehovah's capability to know everything before, wich leads to predetermination) bothered me the most while I was a practicant JW, and the topic of JWs mourning brought it back to me. Maybe someone could shed a light on how JWs cope with this problem. I've seen this mentioned at other places too, so it's not just me who thought of this problem.
As we all know, JW doctrine tells that absolutely nothing survives the death. You have no soul that travels to God, your body is dead. At the resurrection you will get your body back in a perfect condition. Yet the original body is most likely decomposed by then. So this raises a problem: if nothing survived death, then the person that will be resurrected won't be me, it will be a perfect copy of myself.
To give a parallel: let's suppose humanity develops a way to scan every single atom in my body, and to put a corresponding atom 1 meter away from me. This would be the absolutely perfect cloning system: all my memories (stored in the brain cells in my body) would be copied, along with my personality, my looks, etc. This is what according to JW doctrine God does when you die - copy every single little bit of you. But the catch is: it's still a copy! Taking that imaginary perfect cloning system, I'll be standing there looking at my perfect copy, who behave perfectly the same as I do, has the exact same memory as I do, but it's still not me!
So what is the JW stand on this, anyone knows? As I see it according to JWs, you better not die before Armageddon, because by the looks of it you'll be dead forever, with no chance of resurrection. And you still have to do your best, so that a copy of yours can some day walk again the Earth