So he shouldn't be allowed to post concerns regarding what he perceives to be a potential failure on a device he was looking at? The guy's been here less than a month and he's new to Android, having had the app-wool pulled over his eyes. He's not used to ripping the back off of his phone. Maybe others here should understand not everyone is jump-starting a tractor and powering their homes doomsday prepper-style with a phone battery so maybe, just maybe, a non-removable battery is going to be fine for lots of people. And having a battery pack will suffice for those times when they can't get through a full day and have no access to a charger. After all, the OP did throw in the blanket disclaimer of "in my opinion" at the end. How about having the same gusto for those who pop up in every thread with the word "battery" in it and proceed to tell us all that we're doing it wrong and don't know how to use our phones 100% otherwise we should only be getting 47 minutes of battery life on the One. You know, because if we claim to get good battery life on it then we're obviously light users, or liars, who should be looked down upon.
Though, to the OP, I know the feeling but I would say to you that in order to break that polycarbonate back you have to really, really, really want to. It's not the brittle part that plastic-haters want to make it out to be. Most of us have had a battery cover just like it, if not a dozen just like it, and rarely do they break. Every single time I pulled the back off my OG EVO I would say a little prayer. It must have worked because I had zero problems with it and it certainly wasn't as strong as the stuff manufacturers are using today.