Samsung could come up with the most innovative phone or whatever and I still won't buy it simply because android simply sucks. It lags after a while and the interface is a sore to my senses.
I like how my MacBook Pro share texts, imessages, calls, facetime, photos & videos together.
The iOS itself is pleasing to me, I don't like how the android software looks tbh.
But seriously it's because I have an iPad & Mac so an iPhone just works perfectly with that stuff. It's an ecosystem that is unparalleled in terms of quality, aesthetics and optimization.