Perhaps it's naive of me to think that Apple will ever detach the Watch from the Phone and allow set up and full use cases for users who don't have an iPhone. I'd definitely buy a cellular enabled Apple Watch and ditch my phone if possible.
This is exactly why I purchased the Apple Watch. I leave my phone at home more often than not. The Watch does just basic comms and I've removed notifications of everything else. It's the essential communication/navigation device that I need and all I really want. For anything else I'd much rather open my laptop. Hoping one day it can be a standalone device.
With all the watchOS 6 stuff that makes it more independent (App Store on watch, iPhone-less apps, etc), I was thinking this might be the year. Oh well, bet it happens next year.