The UI. But I don't like the removal of the physical home button either

if thats indeed the case then Apple users are dumber than i thought.
you dont need a computer science degree to operate a phone much less the apps you speak of and setting up anything on android is just as simple as it is on iOS except with apple you're paying double the price.

they're one step away from giving apple their usernames/password and let apple do it for them instead.

Kingpin the thing is most people who use an iPhone are not into tech and believe it or not most people who own a phone and tablet are not good with technology full stop. I work in the it industry and I hate any apple device but it really is the most simple os to use out of any on the market and because of this this is why Apple products sell so well.

Apples simple looking ui and open close one app option is all people want and anyone going from ios to android or even Windows Phone when it came out struggled because it worked different to io. It's the same when people go from Windows to a Mac or Windows xp/7 to Windows 8 and the reason why Windows 10 went back to be more like xp and 7.

People even think kids are amazing with tech now a days and this is also not true ios and phones are simple to use and because of this they can work them but give them something more technical to use they struggle.