If you don't need access to iMessage or are not part of the iCloud ecosystem (i.e. do most/all of your work on a Mac), it's still not worth it. I switched ~3-4 years ago for iMessage and the Lidar sensor. The lidar is shit for technical work, or really anything other than the simplest in-phone diversions. If iMessage were available on Android I'd almost certainly swap back. It's not that the phone is bad, per se, just that there are weird limitations that pop up from time to time that wouldn't exist with an Android device.
Edit: I was going to jump on the 15 for the USBC, but I'll probably wait for the hype to die down unless I get a sweetheart upgrade deal from my provider. My airpod case is still lightning, so there's no economy for me in getting my phone switched over.