Why so concerned with ''the afterlife''?

[Altair]

I've never really understood the concern or obsession people have with this thing called ''the afterlife''..? Many people seem bothered with it and wonder what the afterlife must be like, or whether it exists at all. Is it the fear of death and the unknown..?

If you cease to exist then there's nothing to worry about. If you live on then there's also nothing to worry about. You're responsible for your own actions so all you can do is improve yourself and own the decisions you make..

Then there's perhaps this fascination with ''other worlds'', as if this world doesn't provide enough satisfaction and fascination. We have astronomy, we have our own Earth with loads of different natural ecosystems and human cultures, we even have video games with fantastical places. There's basically no reason to worry over or fantasize much about the afterlife because we live now and there's enough to be enamoured by in the moment. People love to imagine something greater, not pausing and appreciating what has been given.

Am I the only one who's thinking along these lines?
The afterlife is sort of irrelevant and unimportant. We live only now.