I'm on the side of the soft hearted charitable nitwits, even after experience to the contrary...
I've often thrown a pistol or nade to someone - if I'm shot out of the last game on a night with no more respawn, I generally give any unused gear to players still in the fight (nades etc)... have even given it to chaps on the opposing team.
Generally this has proven nothing but a positive experience - starts a conversation when they return kit in the safe zone etc. However, recently, my brother did the same - tossed a pistol to a rental he was stuck in a tight corner with, and the chap promptly wrapped it in his jacket and went home with it!
....I still think I'd loan my gear out though. Call me a fool .