If you don't like having backgrounds, then can can always skip it.
I totally and firmly disagree with your opinion.
Customer customization and OEM freedom is what killed the reputation of Windows because it yielded horrible devices, skins and users ending up complaining their machines were slow (duh!!). Just visit the website for windowblinds to get a feel how horribly out of hand this will get if we let people customize backgrounds, tile color and transparency. In that sense, Android is ironically the new Windows. Total freedom = never ending tweaking and poor performing devices. If you want to play around with settings and customization, instead of using something that just works and is a perfect example of minimal efficiency, get an Android device.
This seems like an authoritarian opinion, but MS desperately needs to overhaul its image and that's what the company's been doing by enforcing strict OEM requirements, and limiting user mods. You could argue "what do I care if you customize your device?", but the truth is even if I doesn't affect me directly, it affects Microsoft's reputation and as a consequence its ability to grow and appeal to the masses, get better 3rd party support, better apps and hence it does affect me.
MS has been getting a lot of bad press about the fact W8 is "forcing" a new UI onto people, that's it's "closing" down its environment, that it's going to piss off its partners with the Surface but the truth is MS's strategy will, in the long run, make people's lives simpler and more efficient.