Why put effort into anything when in 100/1000/10000 years everything I love and care about will be dead, gone, and forgotten?

I had a slightly different question: what's the point of doing anything if it'll end? In other words: anything achievable is not worth doing.

I haven't really found an answer to this, it just stopped bothering me, though one potential answer was: happiness and wisdom. Wisdom is unachievable because there's always more to understand, and happiness is not a stable state since we're hardwired not to be perpetually happy because we wouldn't do anything if we were. Thus those two things can be chased always, they don't end, and then you die. After that you have no more problems.

(Mid 20s, don't like driving)