Hi all
Just something I picked up over the years. I don't ever leave my case open. I close it and use at least one lock. Once I borrowed an acoustic and played one afternoon in a bar. I just did it for fun. Someone I knew thought it would be funny to throw a couple of coins as well as a beer bottle cap into the guitat case. I'm glad I looked first before putting the guitar back.
I keep it latched because I don't recall if it was my guitar or someone else's, but I watch some well intentioned but misguided person, who thought he was doing a favor, pick up the guitar case only to find that it wasn't locked and the guitar fell to the ground
J.P.