I made the switch a month ago, and while I miss some things from Android (e.g. a clean way to change default apps, and a nice share menu/framework), the overall experience is so much better I am regretting not switching two years ago with a iPhone SE, instead of getting my previous One Plus 5.

And regarding Messaging, in EU the default is pretty much Whatsapp anyway, with some pockets of Viber and Telegram, so iMessage or Google Hangout was never a real option here.