I can root my Android phone and have in the past, but I have absolutely no desire to do so now because it adds almost no functionality in exchange for a very large security risk. I consider rooting my phone in the past quite a foolish move by someone who didn't know better.
People are trading the future of personal computing just so they can run a banking app and justify it with "but I want my phone to be locked down for security." Not even sleepwalking into corporate-controlled-computing, but actively promoting it.
10, 15 years from now the ability to run your own code will be a distant memory unless you constantly subscribe to an annual Developer Account with BigCorp. Oh no, you've coded something that violates the ToS; account terminated.