Do you keep your battery percentage indicator on or off? I feel like I need to keep it on; otherwise I'd always wonder about the *exact* state of my battery.
They're subjective, but a couple could be;
1. Less space used on the notification tray
2. Less concern/worry about the charge level (ex. some feel angst seeing the percentage drop while using the device, compared to just a general battery icon that isn't as precise)