Are you under the impression that after the seven seals and seven trumpets and four horsemen and oceans turning to blood and earthquakes and famines and everything leading to a new Heaven and new Earth that most people will survive unscathed?

The entire thesis of Christian eschatology is that everyone who isn't Christian burns in hell. And Matthew says regarding the end times "Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out devils? and in thy name done many wonderful works? And then will I profess unto them, I never knew you: depart from me, ye that work iniquity."

Maybe you should read your Bible again, it's pretty clear that Heaven is meant to be a very exclusive club that even most Christians won't get into.