I make games for a living. On one hand, it's very rewarding, because at the end of a project there's actually something that you have created that literally hundreds of thousands, even millions, of people will enjoy. I have wondered with increasing frequency over the years whether it would be more valuable to put my skills towards things more obviously beneficial to the health and welfare of humanity.
In the end, though, I have brought a lot of joy to a lot of people over the years. I do this better than I do anything; it is quite possible I do this better than I will ever be able to do anything else. I can sense myself casually drifting to the point where my experience often interferes with my ability to try reckless new approaches to things. I'll fight that as long as I can, but my days of being able to change the world are probably numbered.
What does the betterment of humanity mean exactly anyway? For a lot of people, I have made life more enjoyable. I'm sure for some, I have made life worth living, if even for a short while. There are other things I could do that might save lives, but saving a life is not the same as making a life worth living. What a drab place it would be if everyone worked only to keep everyone else alive, only to have them inevitably die at a later time anyway.
We often forget that we will die. We more often forget that we should die, to make room for new people, and more importantly, new ideas. Saving lives has become and end unto itself, grown from this forgetfulness, until we have forgotten how to live.
So I will continue to do what I do. I will continue to touch people's lives in the best way that I can, and hopefully make us all better for it.