Unacceptable. I put up with way too many buggy ROMs and crappy user experiences with my previous non-Nexus devices. The whole reason I bought a Nexus phone was so I'd receive timely updates and not have to worry about being left behind. The correct course of action for me now is to jump ship to iOS despite how invested I currently am in the Android platform. Luckily, owning an iPad (older than my GNex and running iOS 7!) makes it a little easier.