I will never understand the argument against removable batteries. Here is a common site at the school I work at. Every free outlet is tethered to phone. During the day, my coworkers leave their phones on the charger so that it lasts later that night.
I never charge my phone during the day. As I write this, my phone is at 92%. Not because I have some sort super battery, but rather a spare one. I have had a spare battery for all my phones from the original Droid, and it wasn't until I bought an HTC One M7 did I realize how vital it was. For 2 years I was a wall hugger with the M7 and hated it.