Wow. Your experience reminded me of one I had years ago. When one of my boys was just a baby, I was pushing him in stroller towards the mall entrance. A young guy (maybe 5 years younger than me?) went ahead of me, opened the door... but didn't keep it open for me. Wha??? I would've said something, but I was struck speechless. I wanted to say somthing- like how his parents would be ashamed to see this. Or to say "Gee, thanks for nothing!" But like I mentioned above, I was just speechless. I plan on teaching both my boys to hold doors open and to show kindness and compassion for others (like that teenager did for you). Even I hold doors open or let others sit in my place if I see that they need to. But then, my parents taught me right.