I have games that run a full battery to zero in two hours. So they are basically unplayable on a phone with a fixed battery. Additionally, I went to a Moto X after years of Samsungs, and went right back to my Samsung after two weeks. Main reason: tired of being a slave to the outlet and tired of always looking at my battery all day and worrying if it was time to plug it in for an hour or more. So I went back to my three batteries, two chargers, never plug in or worry about battery life lifestyle. And I'm never going back until it takes less than 30 min to do a full charge. Otherwise, I have too many other things to worry about and plan around than if my phone is charged.
I guess for folks who don't use their phones much, they wouldn't care either way.