Honestly, after being mostly an iOS user for most of my Smartphone life (Barring a short stint with HTC and Windows Phone 6, yikes...), I finally switched to a Google Pixel 3 and I couldn't be happier, for one single reason:
I don't need to compromise with it.
I'm a Windows 10 user, and it's integration with iOS is.... Pretty weak. I wanted to use Firefox on my iPhone as I used it on Windows, and wanted to be able to easily pick up where I left off. iOS made that bloody difficult for me, always insisting I just use Safari.
Nor could I easily reply to messages or quickly pull photos off my phone from my PC. I was spending hundreds on this expensive phone that I just couldn't use how I wanted to. WIth the Pixel, that's a thing of the past.
I get near Mac to iOS level integration between Windows and Android, I can super easily continue my web browsing, or document editing, or general conversations between my two devices, and I just don't feel like I need to fight my device any more.