Programmers aren't all the same person. People have different hobbies, lifestyles, interests. Just because someone's interested in programming, or their job is a programmer, doesn't mean they should enjoy non-visual things like music, languages etc. Some may enjoy running, skateboarding, dancing, stamp collecting. I think what I'm trying to say is, programming is just another part of someone's character, not their whole character.
I didn't take it as a comment about character, more about eye strain!
What I meant is, if you are staring 16 hours a day on the screen, It is wise to choose something that will be not as hard for your eyes.
Visual activities where you change focus, like drawing and photography, do not strain your eyes and might be good for your vision. One of the problems with staring at a screen is that your eyes maintain the same focus distance.
I'm curious, why do you think that way?
Better don't tell this to self-sufficient indie game developers. You should have as many hobbies as you have talents.