So that you never died and maybe never even existed, does the version of you that went to Heaven get to stay in Heaven or would your soul vanish as if it had never been there? If you get to stay, wouldn't that mean Heaven would quickly become packed with alternate timeline clones of literally every person who ever lived or ever could live?

This is a conundrum that challenges both faith and the Many Worlds interpretation of quantum mechanics.

Yes Deadpool 2 attempted an answer to this question but I don't feel like it explored the concept to my satisfaction.

ok I gotta admit, using Deadpool 2 for Deep Thinking on this subject is fuckin hilarious