Human beings are the only creatures on earth who look for a purpose.
You probably think I'm gonna give you one, well I'm not, we suffer, we slave and we expire. That's it, that's life.
We live because it's marginally better than dying, if you look for a purpose or you want your life to mean something, you're **** out of luck. Even if you did something great it'll have been forgotten in years to come.
No, you need to accept we are here out of chance, a *******ised science experiment created by the expanse of the universe - odds were our creator and we as a planet exist on life support. What you have to remember is that in accepting this, it is no reason to not enjoy life.
People think I'm a pessimist, I'm not, I just believe it's poor practice to expect the best and be disappointed than expect the worst and be surprised. Provided you take pleasure in the little things in life and don't ever expect anything from anyone it'll be worth it.