I have to have a passcode for my work email. I use 4 digits because It's the fewest I can use.
If/ when an A6 jailbreak is available I'll be using Exchange Unlock again. It can't come soon enough! I hate having to use a passcode.
Just incase I lose it I don't want people to access stuff. I know I can remotely wipe it but still
That's pretty pointless for a lock.
Find My Friends requires your password unless you have PassCode set. This would allow him (and me) to access that, and other similar features, more easily when one doesn't really have the need for one to begin with.
PROTIP : If you have a passcode on your device and for some reason or another you are trying to recover your data from the device after water damage or severe damage to the device. You will be unable to access it because you will need to enter a passcode before given iTunes access.
Take off your passcode if you live a wild lifestyle
That's pretty pointless for a lock.