Life is just a cruel joke without a punchline

I keep thinking what am I suppose to do? What is the purpose of all of this? Where do I come from? What should I do? Am I just another insignificant entity? Is it true that this universe where made from nothing? If it true, then all of this is for nothing too? So everything in here is because an accident? Because there is a coincidence that my great great great great great great great great (go on) grand parents met so I’m here? Without a purpose? Without a goal? I’m just here (POOF) and then die eventually because that’s it, I can’t fail because I don’t even have something to win / to strive for. Is this life really worth it? the pain you feel, the sweat you drop, the tears you shed has nothing to do? Life is just a cruel joke without a punchline then.