Good. I haven't rooted in a long time and I don't see why anyone would anymore.
The buttons on my Galaxy S4 don't work anymore. Button Savior needs root, as does removing the temperature sensor check on the flash since that's now broken. Even before that, I like to customize the icons in the bar and fine tune everything to my liking.
As long as it's still easy enough (which flashing a ROM is), then it's cool. Otherwise I may as well go back to iOS if they ever increase the RAM and wait for jailbreaks if I'd be doing that with Android anyway.
It's even needed for Ad Away/