I highly recommend Ian McCaskill‘s recent book “ what we owe the future.” He makes a compelling rational argument that it makes no less sense to discount future generations than it does to discount physically distant people who are suffering today.

Not particularly no, but that’s a very unpopular opinion to hold. I remain unconvinced that this is preferable to non-existence.

1) you will go back to nonexistance anyway

2) you wouldn't care about not exisiting

One just exists and has some fun, some worries - and that's it

That's an honest question, like in your nihilistic worldview where humanity going extinct is no big deal, what drives you to do your every day things?

If you could prevent humanity from going extinct by pressing a button, would you do it?

If you could cause humanity to go extinct by pressing a button, would you do it?

What do you care about, and why?

Having a nihilistic worldview doesn't mean that a person doesn't have the same drives, emotions, desires, etc. as other people. It's not a contradiction to both enjoy being happy and be a nihilist.

> If [something impossible], would you ...?

The answer to questions like this is always "maybe." If the impossible is possible, who knows what other considerations there are?