I think you missed the point, the way to "not suffer" is death. In general every morning we make a decision on whether the expected future happiness is going t

I think you missed the point, the way to "not suffer" is death. In general every morning we make a decision on whether the expected future happiness is going to outweigh the expected future suffering. When that fails (and it does) we find reasons of duty to keep going, for the people we love etc. You're right, depressed people have a skewed vision of the future and it destroys their expectations of happiness.