On my way home from work, almost every day I pass the same bum (yes, I still use that word) standing at an intersection looking for handouts.  I've never given him cash, but every now and then I'd give him whatever cigs I had remaining in my open pack.  Sometimes only 3, sometimes half a pack.  He never "begged", per se, he would just stand there and make that smoking gesture; I'd nod my head and roll down my window.  He knew smokes were coming his way.  Obviously, since February when I started 
vaping, that "tradition" has ended.
One day I caught a yellow and was at the head of the line at the light.  He saw the tip of my e-cig light up and it intrigued him.  He walked up. "One of them electronic cigarettes ?"  "Yep."  "Can I try it ?"  "Nope.".  He flashed a smile of missing teeth, let out a laugh and said, "Kinda stupid of me, huh ?", I said, "Not at all. You weren't the first to ask, you won't be the last."
I've had several people, friends and total strangers ask to "try it".