Learn to root..
Learn to flash ROM..
become flashaholic flashing multiple ROMs per day crack flashing.
Never having the same ROM/setup for two days in a row
Want more power....
Flash a custom kernel.....
Too much battery being used
Now horsepower is not so important.. Need more battery life...
Need to squeeze more battery life out of device
Tired of custom kernel stability(even when not OC/UC UV)
Stock kernel... custom ROM, rooted..
Tired of all the bugs and little nuisances in custom ROMS..
Stock rom, stock kernel... still rooted of course
Root? I don't need root anymore..
Completely bone stock