A door closes, another one opens.... "life" continues.
I believe we "sleep" but I'm not convinced that we can'y go beyond the sleep into a different "life".
Never being a JW, I just don't understand this pre-occupation with 'sleep'. I've tried asking my JW friend about it, and at some point they just shut up (they don't want to offend Jehovah). Why would a creator have you 'sleep'... what's the purpose? He created you to sleep at some point? A soldier gets blown to bits by a large bomb, their body is immediately destroyed and their soul is put to sleep? To not believe in an afterlife is one thing, but to believe in God and in all his awesome creations and then to think you just 'sleep' at the time that the body dies, just doesn't make sense (at least for me).