You are absolutely right.
However if you do your part in solving the issues we as a people of the world face, it is my opinion that you will feel better as a result.
Say you could do something for the homeless, protest, inform others, like say through founding of a newspaper, start a worker-owned company and many more that I cannot think of at the moment.
Doing something to work towards resolving the issues that bring you down is it’s own therapy.