I'd like it too, but there are still innumerable things that also need root. I've never had a single problem from root and would never own a phone without root, for any reason. Without root, a phone just sucks too much.

Pry-fi (randomise MAC address when probing for wireless networks), Titanium Backup (backup that doesn't suck), most advanced network tools, changing FDE password to be different to lock screen password, running an sshd, detecting IMSI catchers, most performance fixes/optimisations, even just basic full filesystem access - all need root too.