I agree that money is kind of useless. There is no purpose to life. Life exists because of reproduction, I guess that is kind of the purpose. Sure it s bullshit, but why go against it if it s an enjoyable path to take. I was thinking about running away permanently, not just for a summer.
People are roughly the same everywhere.
However, maybe you should go away for the summer. To a camp, to a resort town to work, etc. Be happy that you discovered your depression early on. I have no doubts that you will be able to end it some time in the near future. Unfortunately I wasted three years of high school on depression before I came to terms with it.