If your can make one person smile it can change the world. Smiles are contagious, and an act of kindness can change someone's life, therefore changing the lives of the people they meet.
When you stream, you make people smile, although you can't always see it, you're making a difference.
Seamore is right. You say you are meaningless, that you won't leave your mark on the world? Then explain how that is meaningless, that is the best thing you can do is make people smile like that.
C'mon Kyoshi. Don't fall back into the depths of depression. You need to conquer the mountain of depression, and waiting at the top for you, is happiness.