I can see your point and agree with it. But at the same time I feel motivated through your questions. Why should it not be possible to do something for the real community in 15 minutes in a bus if you can do something in that 15 minutes for your virtual community? If a world as big as Eve and a company of 300 game developers of all kinds can be financed by $15/m, why could we not find a way to bring food to 3000 homeless?

Also there are other meaningful things one can do that a perfectly possible with these ressources. One that I spend a lot of time doing is learning another language. Clicking through a few vocabs on Memrise is certainly possible on the bus. I do that for years now. And it's also quite possible to pay for online/skype lectures with 15 bucks a month. What do you think about that? I think that's also doing something for this world. Learning a new language will make you better and will bring you closer to another culture, and by that brings both cultures a tiny step closer to understanding each other better as well, because your friends will read your FB update about that awesome book or movie you enjoyed in that other language, and you will start explaining how things work in your country to friends using that other language you've learned. What do you think about that?