They're not opinions, they're verifiable facts. OS layout and interface may be opinion but speed and smoothness are quantifiable, and Apple has mostly led in this area. There's still not a chip out that can compete with apple in Single-Core processing. That's not opinion, just fact.
I do agree on the back button, probably one of the biggest reasons I never went to apple. Was too used to androids ecosystem to make the jump, but I still envied iPhones for being a better product. You assume I enjoy IOS, but I've never used it for longer than 5 minutes. I deal in facts and I'm very tech savy in the mobile world. Not trying to bust your balls or anything, but everything I say is backed up by quantifiable data.