I've made this point before in other threads. I understand why people believe in afterlifes and reincarnation but I think they are being irrational, for the following reason. Be patient...

If you exist at all on this planet, you are a winner thousands of times beyond any millionaire lottery winner. Millions of times even. Your father in his lifetime produced hundreds of billions of sperms. Your mother produced tens of thousands of eggs. Your parents were only there because their fathers and mothers also produced hundreds of billions of sperms and tens of thousands of eggs, and so on, going back in time as long as you like (the further you go back, the more astronomical the numbers become).

You are here as a a result of one sperm fertilising one egg. Just think: any one of hundreds of millions of other sperms could have got to that egg first. But the one that got there was you. Likewise, that amazing sperm just happened upon one out of tens of thousands of possible eggs. You are you because of the fortuitous meeting of one out of billions of sperms with one out of thousands of eggs. Lucky you! There were hundreds of trillions of possible combinations, but here you are, you!

Now my point is that, to an awful lot of people, that isn't enough. Not only are you here and doing rather well thank you very much, you want even more. You can't stand the thought that, one day, you'll either be a pile of ash or you'll be underground being consumed by bacteria, fungi and Annelida. You want an afterlife or you want to be back in another guise (preferably not as a slug or mosquito). But you're forgetting those hundreds of trillions of potential combinations that never quite made it. If only the sperm second in the race to that egg had done a little turn, you wouldn't be here being you at all   There'd be no you. There'd be somebody completely different.

So I think that we should be deliriously happy with our earthly span and stop looking for even more. If I ever get to heaven I want to see all those nearly-people up there having even more fun than me. I hope there's room. They deserve that because they missed out on existence. We should all be more than happy with our lot and give way when the hour cometh. Amen!