I was told Satan's most successful strategy to date was to get people to believe he doesn't even exist.
No religion = no Satan and then the end will come.
If I was Satan I would be hiding demons in charity shops, ouija boards and guaranteeing those attending seances all got an appearance just to prolong the "short time" until my ultimate demise, coz don't forget although he gets locked up for 1000 years he will be let loose for a short time afterwards. However I am starting to feel this short time might actually be quite a long time if it is the same amount of time as soooooon.