"In my opinion, that's such a waste of time. You are wasting your life away."

If anyone knows the best use of my life, I'd like to hear it.

When I do the things I like, I don't care about whether it is useful or not. For some people, what they like doing happens to be what many perceive to be useful. It is not entirely because they are more disciplined. It doesn't take a lot of discipline to do what one likes.

Maybe you wouldn't like to live my life. But there is no need to worry that it will ever happen. Enjoy yours.