If you could know the absolute and total truth to one question, what question would you ask?

I saw that question so here is my answer. My question would be Why do we exist?
Like I've been wondering that forever. Like what is our purpose? This is all pointless. Everything comes to a end so what is the point? None of this even matters. Why am I wasting my time doing meaningless shit when I am just going to die anyway? Once you die, it's over the end. All the shit you spent YEARS doing gone and you are forgotten. So why does living even exist when that is the outcome? Is it because living is a punishment? Is that why we suffer so goddamn much? Is that why alot of people are depressed and suicidal? Speaking of depress is anyone even truly happy anymore? I've talked about love not existing but i don't think happiness exist either. What is there to be happy about? What could you POSSIBLY be happy about?
This world is so shit. Life is awful. Humans are awful. People say be grateful you are alive but why? What is the point? Why should I be happy about living? What is so bad about being dead? Why do I not want to be dead? What is so positive about being alive? Is it to feel what people believe is "happiness"? I just-