I honestly don't think many of them think that way. Maybe I am giving them too much credit, but hopefully less than 10% really feel that way.
I kept it out of mind. I think most active JWs do as well. They don't dwell on the 6.5 billion deaths required for their paradise, becasuse if they actually thought about it day in and day out they would eventually leave. When it does come up into their heads during a silent moment they play the "Jehovah reads hearts" card mentally and forget about it.