Very good points, Nicholas - and ones I should have raised myself, heh. Always is security issues to be aware of when you start noodling around with custom ROM's and such.
Android isn't for everyone. I still use an iPad on a day to day basis, mostly because a lot of my content (books and movies I enjoy re-reading/re-watching) are locked inside the Apple ecosystem.
A lot of people have terrible, terrible experiences with Android as a whole, and honestly, IMO - the single worst thing about Android is the fact that every different handset maker slaps their own goofy interface onto the darned devices, making the whole experience seem very fragmented and disjointed between different manufacturers. I find vanilla Android, Jellybean in particular - to be just a killer mobile OS. If for some reason I was forced to go back to Android with TouchWiz or a specific manufacturers skinned up variant of Android I'd probably rather use a feature phone, heh.