We are just a little particle compared to the universe, nothing we do matters; love, religion and time are all made by humans so we don't lose our sanity, because, we want to feel safe, but in the end, we are not, there isn't someone that protects us and anything we ever do will not matter at all.

So if nothing matters, why be sad? You don't have to, you can just enjoy your life however you want... Fuck depression.