I switched to iOS when the 2 previous phones I had both got their support dropped by the manufacturer like 3 months after I bought them.
But I think Android is the superior OS.
And personally I do support the decision that the 3,5 mm audio plug was removed. It will finally persuade headphone makers to innovate on wireless headphones! The lack of features is disturbing there.
2 out of 2 android phones I had got their support and updates dropped about 3 months after I bought them. That was the point for me to switch to iOS. 2+ years of support and updates? No problem, yo! Although I think I'd like the Android interface more.