Anytime I happen to be using an Android phone and go into an Apple store, it makes me miss having the iPhone. Every time I have switched back to iOS I stick around a little longer. I have been on the 7 Plus since the Note 7 debacle, minus a week with the Pixel. I still read Android Central articles and keep up, but I am very happy with my 7 Plus. The only phone that might tempt me is the next Pixel, but I don't know that I want to leave again. iOS is very comfortable. Most apps are better on iOS and you get many of them first on iOS. The Apple store and AppleCare are awesome. There are some things you just don't get from Samsung or LG or even Google right now. I really like being able to walk into an Apple Store and get that level of service if I need it (not very often).
Enjoy your new phone. You made great choice, but you probably already know that by now.