Same with the iPhone 6 Plus. I did want a bigger screen, but the battery was the main draw for me. Paper thin phones never appealed to me. I used to use an HTC Apache (Verizon XV6700) with a bulge battery. That thing was over an inch thick and it barely lasted a whole day, but it still fit easily into the front pocket of jeans. Phones were rugged enough back then to not require cases. I think manufacturers realize this more than we give them credit for and consider cases a personalization option, but IMO the best phone design would be a back-plate-less design where the case provides some of the structure as well. This would allow a choice: thin backplate only if you want that, or more protection without tons of thickness, or bigger battery as part of the case without some hacky battery-charging-the-other-battery-and-blocking-the-charging-port ugly super thick case like we've seen for e.g. iPhones.
