What is the point of it all?

We all die in the end, we lose every person in our lives at some point, every memory fades into dust, and nothing remains. So what is the point of it all?

I know we're supposed to live "fulfilling" lives (get job, start family, etc..) but doesn't it all seem vain? We enter this world with nothing and leave with nothing, so why try so hard to become something? It seems more logical to just sink into the void and become one with it, in wanting nothing you gain everything; peace is the ultimatum of life. We live our entire lives just to die, and to finally be at peace.

I don't even mean to sound edgy or anything, these are just some thoughts I've been lingering on and I still haven't come to process them in a satisfactory way. In fact, the more I think about it, the more I realize it's useless to even think about it.