Unless something breaks, or its going in the park tank, etc, theres really no reason to detail strip the gun. In many cases, like your buddy, its just an accident waiting to happen.
Theres nothing wrong with knowing how the gun comes apart and goes back together either, just, its really not necessary for cleaning.
"If the rule you followed brought you to this,
of what use was the rule?"
“The enemy is anybody who's going to get you killed, no matter which side he is on.” - Joseph Heller