I personally wouldnt' take a chance using someone else's pass. I guess if I couldn't afford lift tickets, then I'd hike for a few runs. Not saying some lift ticket prices aren't insane...some are crazy, some are reasonable...but they can set whatever they want. Tickets to sporting events are insane too...but I don't buy those, cause I just dont' care enough about it to pay those prices.
I agree with your thoughts about your kid -- if everyone lived their life by the values they try to instill in their children then we'd always eat our vegetables, not flip anyone off in traffic, and only say something if we had something nice to say. And everyone would get a cupcake, except the people with wheat allergies who would get yogurt.
On a somewhat related note, was in New Hampshire a few weeks ago. Our package deal came with vouchers for lift tickets that were good at any of about seven mountains. We ended up with extra vouchers because one day went to Sunday River (not included) and one day the temp/wind chill was something like...40 below at the base...went x-c skiing instead.
So, we figured we'd sell some of these things....but who wants to buy a "voucher." We redeemed teh vouchers for lift tickets (4 - there were two couples) as soon as the ticket office opened, and then thought we'd sell the tickets. We figured it was ok, since we didnt' actually USE the lift tickets. We were wrong. Got the attention of happy friently resort staffer (this was at Attitash) who told us it was illegal to sell them, and to leave immediately or he'd call the cops. Ouch. Funny thing was I thougth he was interested in buying them at first, and was doing my best to tell him the tickets were legit and he was getting a good deal -- until I saw the Attitash logo on his jacket -- doh! We scurried away with our tails between our legs -- there was plenty of room there where our b-lls used to be -- went and changed jackets, and used the tickets ourselves.
I still think it's wrong that we couldnt' sell the tickets. The statute we allegedly violated was "theft of services" but since we never actually used the tickets, not even for a single run, how coudl we have stolen anything? I'd attempt to sell the tickets again, since I wasn't actually using them and then re-selling -- but I'd do it in the hot tub the night before...and make arrangements so as not to get nabbed.
Oh well. Made for a good story when I got back to work....with some embellishment of course.