Then I would go for another ISP, that's the point I can choose because I live in Europe, but If I could choose between no internet and free internet from Facebook I would go for free from Facebook if noone else want to provide internet for people in Africa.
Internet.org runs on top of existing ISPs. Anywhere it's accessible, other ISPs are available in the same region too.
"No internet" vs "Internet.org" as the only two options, is not a choice anywhere at all.
Those ISPs have bought public spectrum to provide telecom and internet services. Public spectrum being used to make services of foreign companies free, while making other traffic expensive, is something a democratic population should be concerned about.