To my mind, iOS security is where it needs to be for that device. I respect your opinion, but we're not going to agree on that. I've considered your argument and I don't see anything that changes the fundamental "so don't buy an iOS device, they do not have a monopoly and there are other fish in the sea". For my part, I'll keep buying them because I follow a similar philosophy that security changes are preeminent and should be allowed to break and constrain other software.

Thing is, if I believed the Mac was going to be ratcheted down to iOS levels of paternalistic control, I would be upset too. My conclusion is it'll never happen. I don't think they'll ever break their general purpose computer. If they did, you'd see a massive exodus of former Mac users looking for a new UNIX desktop. Maybe a big enough exodus to finally make The Year of the UNIX desktop happen. :)