The kind of people is at least 14 billion years old. It is not true that we had evolution, and that we used to be monkeys. I know enough about this topic to talk about it. At different times, we had different opportunities. But over the past few thousand years, we have been degrading. You will find all this fantastic, but I would not talk about it if I had not studied this topic well.
Depression is selfishness with a bias towards negativity. When you realize that a huge number of people are suffering in the world right now, that something bad is happening right now, then you simply will not have a reason for self-humiliation, because you need to help others. I mean that depression is only in our minds. Do not listen to this stream of thoughts, remember what you like and strive for it and everything will work out.