Helping others can help develop YOU.
For instance, I am now quite informed on many subjects but this was not my original plan. I was very uninformed until 36 after I turned Atheist. My point is I don’t like science, including I don’t much like philosophy either ( I started learning about it in-depth around 5 years ago). I don’t like reading and I don’t like studying, I don’t like learning about Religion, I don’t like a lot of things that I have to do to fight theists and others think I do it because I wanted to. No, but I saw atheism needed me. So I decided to take on the challenge to help as much as I can, to me lives are on the line and also I wanted to make sure I helped to offer my best to make the world more humane if I can. And in doing so I myself have become more developed.