What are the paths one could take to use their programming skills to benefit mankind (good causes, scientific or medical advancement, etc)?

Problem: I dropped out of school, learnt programming, on my own, from text books and the internet. I have 7+ years of commercial experience from web applications to big data to mobile apps. But all I seem to do is make rich people richer with the vain hope that one day I'll be the guy with the good idea using other people to make myself richer.

I googled for simular posts on the subject and saw a lot of people saying... "Just do your 9-5 job and donate a lot to charity"... I'm sorry to sound selfish but thats not what makes me tick; I need to be invested in and excited about the project at hand; it's not only got to be for a greater good but it's got to kick arse and feel good doing it too...

• Does that kind of job exist?
• Does it involve programming?
• What other skills do I need?

(Apologies if this question is too 'fluffy' or 'wishy-washy', but if it is a pointer to where else I could ask it would be appreciated)