you are gonna' get a lot of different answers...
I have always cleaned my guns after firing them...always.
Just believe that letting one sit after firing just cannot be a good thing.
In the immortal words of Red Green:
"Quando Omni Flunkus, Moritati" -
"When All Else Fails, Play Dead"
Ruger P97 / Ruger SR1911 CMD / Ruger SR9c / S&M M&P 15 Sport/Ruger Mk 3 22/45.