My car doesn't have bluetooth capabilities.
Your car need not have bluetooth. That is the point of buying the adapter that spits out 3.5mm audio.
Apple wise.
I don't like the software. I find it far too limiting (can I plug the thing in and copy paste a photo from it? FTP or something equally easy?), and I find their restrictions upon what people can make (no emulators, no tethering, the ad blocking/our browser or no browser and all the rest) even worse. I don't know if I can even get to easy either, or at least no easier than the alternatives on the market.
I don't like them abandoning common standards -- proprietary chargers, no 3.5mm headphones, no SD memory, no easily swappable battery...
I find them massively overpriced for what they are (and that is before we get to the no SD so memory matters and thus upgrade differences in price), even more so if I consider the design faults. Speaking of batteries that slowdown because old battery stuff is just the tip of the iceberg there.
I find them messing with repair shops and supplies of repair parts to be horrible.
I find them messing with electronics companies (they are worse than EA for buying things in only to kill, or indeed buying up space only to abandon which is much the same thing).
That said I don't have a phone nor tablet for most of the same reasons above so it only bothers me when I get to fix the junk or try to get it integrated into someone's business for them, and that usually just amounts to figuring out where they played hide the email signature and/or install some kind of file sharing/remote storage program.