I converted after the 6 came out, I hit the wall of "this is basically the same iPhone I already have just marginally bigger, and I don't want to lose my jail break freedom" so I jumped ship and have loved it. BUT- I have been on an i7+ since December (post note 7 recall) and while I don't dislike the phone and software, I don't love it either. The only two things I truly like about iOS over Android is iMessage and, that's about all I can think of at the moment! The other slipped my mind as I type. I have a pretty large group of friends and family with iPhones and that's really the only advantage for me. And is by far not enough to keep me on that side of the fence.
There's more than a handful of reasons why I much prefer Android over iOS nowadays. App/setting shortcuts, camera (iPhone has a great camera, but pro mode on Android devices is awesome), LOVE not having to keep my apps locked down to an annoying grid, multitude of widgets wherever I'd like them to be (not just a limited list on a separate page), the list goes on. Truly don't see the argument of iOS having more refined/better versions of apps over Android anymore, I've never had an issue with any apps. When I describe a lot of my reasons why I prefer this OS over an iPhone to friends, I get the "well my phone does_____ too", it's easier to experience it first hand VS talking about it.
There's the beauty of a 14 day return if you don't like the device, then you can simply go back. It could take some time to get used to the system and device. If you haven't already just go in store and play with a multitude of devices and see how you like the OS! And do as much research as you can. That's what I did