Today, I realized that I won't see the moment when the last satoshi will be extracted because it will be in 2140! I can't live so long)
Aren't we all? On the other hand, we won't also be seeing the last paper money being printed in our lifetime because there are no assurance as to when will the government stops doing so. At least for bitcoin, it would be limited and rare giving it some form of value.
Soon btc will have almost zero inflation. By that time it's gonna be valuable, more and more each year.
Hopefully people would still use and trade bitcoin by then, because if it failed hard on its early stages, no matter how rare bitcoin would become, it would still be valueless.