You don't see the point because there is none, it's afraid you and you cannot manage the fact that all is meaning less. You're depressed.
What to do about ? Seek for the greatness. To what is beyond you. Be great or be nothing. Perhaps you didn't even realize but you have ambition, so much ambition that he make you sad.
The world is in such a shape that you can"t see how to achieve or to be satisfied. Look for what inspired you, make a goal. Be a better persorn, not the greatest human alive but the one that you can be proud of. Step by step, point by point, build something; never stop to learn and never be affraid to do something.
Be a what you meant to be
Be a Man.