SMH indeed!!! When I was in college I gave up my seat on the bus to a guy who was on crutches and was obviously recent post-op on his knee. He almost refused to accept.
He was probably raised to not take a seat from a lady...but I'm with you, I couldn't sit there and not offer.
I was on crutches for a week and taking the bus/subway. I stood most days - I don't think anyone offered up their seat to me.
We were raised soooo differently, it's sad that manners and common courtesy aren't a priority for parents today....it's all me, me, me...greed and get what you can.