Overall, there's none; every living being is simply shat into life and dies sooner or later, there's no reason or meaning behind that besides nature being nature. What you should know is that in this world and universe everything matters even if it doesn't seem like it, even the fact that I'm writing this post may have killed or saved someone's life (see “butterfly effect”), so, my conclusion is that if you want you can live to leave something behind, whether that's life (children), history, science, philosophy, music –general culture–, etc. At least that's the reason I haven't killed myself yet, despite having gone through terrible times. If you choose to live, then my suggestion is “live by yourself, not others”, don't let others lead you, don't be anyone's soldier, anyone's punching bag, anyone's scapegoat. I suggest you read Max Stirner's Peter Gelderloos' works
