What became of the dooms day believers? Y2K, 2012 and Sept 2015 all got people believing in the rapture. Do they see their stupidity?

Don't worry, they're on about the non-existent planet Nibiru right now, and the rapture retards will have other dates up their sleeves. They may be too embarrassed to say 2016, but I doubt it. They never learn and they almost never apologise.

They were posting in here the day after the Sep 2015 one asking about some other 2016 doomsday with "70 Jubilees."

Not all of them believed in the theological "rapture" of the Church. Some just thought the world was going to end or change in some fundamental way.

Yes, those who believed the doomsday prophets were stupid. Yes, the gullible people don't learn their lesson. All prophets are cheats. They make money through your gullibility.

Nope, they never learn. They just shut up and lay low for a while, and then pick a new date to rant about.

No, they do not see their own stupidity. Most likely they never will.