Please stop making this into a language topic :/
Anyway, I'm not really sure why anybody would actually want firefox os (b2g), as there will probably be hardly any apps. If you want something that has the looks, just use miui.
Can anybody tell me why you would want this?
Android is now getting more and more problematic with every major version. That can be an alternitave OS that may replace it if we can't get any further, and you heavily underestimate the number of apps... As F-OS will be GPL-ed, I'm sure a lot of geeks will prefer it to android just for that, actually I saw that many only refuse to think android as a 'real' linux distro because it don't has a copyleft license. That people will surely be able to write apps in 5 minutes for almost any problem.