Totally get it. I rotate between Android and iOS, and if you simply want a new toy for a bit but good with going through the hassle of moving back, go with god...or Android. However, if you're gonna sell devices and buy a new one yada yada I'd think reeeeeeally hard about it. You're not going to miss the Apple ecosystem any less now than you did before.
I'm the opposite - I'm actually far more invested in the Google ecosystem (with the exception of movies and music, but that's an easy fix...well, the music is anyway). However I always (until now) preferred the way iOS does things, and the way it flows. Apple has gummed up those works something fierce the last two iterations of their OS. I've been so thoroughly enjoying using the Pixel XL I miss less and less from my iPhone, which sits lonely in a drawer.
BUT
I'm a guy who will probably always have two phones. If you're a monogamous phone person, think hard about what you really want from your device. If it's a giant hassle for you to swap back and forth, might be worth it to just let it ride until new iPhones release in the fall.