In USA metropoles during rush hours, maybe.

For people where >3 out of 4 stop sign encounters are uncontested, the feature is idiotic because not only it slightly wears out the starter, but shutting the engine off and immediately turning it on burns more fuel than letting it spin for those 0.5 extra seconds worth of power, and I doubt the catalytic converter feels that little difference.

Granted, I regularly see a few cars idling while their driver/passenger is buying cigarettes and it drives me nuts, but that has little to do with the start-stop system itself (and that *little* involves them disabling it).