Should I turn off or standby my encrypted phone to maximize lifespan Should I turn my phone off at night or just lock it, to minimize battery usage and battery wear, and also wear to the flash memory? 
This question is similar to Should I keep my Android tablets&#39; power off or leave them on standby mode?, but my phone's encrypted, so everytime it boots up it has to decrypt, which I'm guessing uses up quite a bit of battery to do and IO operations to the device storage.
Personally I enable airplane mode at night to minimize battery usage. So the device doesn't require a boot when I'm ready to start the day. Just disable the airplane mode.

Airplane mode just disables radio signal (cellular services, bluetooth, etc), since it draws most battery juices.