Most of the "Unfortunately, X app stopped" messages are not a result of Android itself, but of bad developers who don't thoroughly debug their apps. That's not

Most of the "Unfortunately, X app stopped" messages are not a result of Android itself, but of bad developers who don't thoroughly debug their apps. That's not really an operating system problem. If an applications crashes with an exception or some kind of issue do to a developer, it's not reasonable or fair to blame the operating system. I don't blame iOS when a buggy app crashes. Also, I easily get about 24+ hours of battery life on my Nexus 5 with 4-5 hours of screen use. If you look on the Nexus 5 subreddit, some people have difficult getting more than 3-4 hours of screen time while others (like me) have no problem getting 4-5 hours.