I too don't see any need for an extended battery. If i needed more juice, I would get a second battery rather than the Extended Battery. I think this phone is thick enough already, and i think the EB would be too bulky for my front pocket. I am not usually too far from a USB port if i ever need to juice up in the middle of the day, but i make it through most days without a problem, and I use the fool out of my phone.
On Days when I plan to be away from any means of charging, I will turn down the brightness, and turn off LTE unless i need it.