So what makes you all remain on iOS 12?
I've been playing with tech longer than I care to remember, and while what we have now is truly amazing compared to when I started, the increase in complexity, shorter development cycles, and decrease in testing and expectations of quality have made the risk/reward ratio tilted too far in favor of the former to proceed with anything other than caution and not blindly install every update presented.
Ultimately, all these things are tools, and tools must do their jobs properly to retain trust. There's also something to be said for stepping away from the grind, and sticking with what works.
iOS 13 has some attractive features, but evidently wasn't completely cooked, and not ready for mass consumption. 13.4 appears to have reached a level of maturity that seems acceptable, and combined with service upgrades that require a newer carrier bundle than in 12 probably means I'll update when it's released.
In the interim, after a peaceful 2019, Apple has pushed the 13 OTA update packge to my phone three times in the past couple weeks, so it's clearly becoming more anxious.
That attitude is one of the most annoying things about the Apple of last half-decade or so.