Corrections and comments by a Dane

(Denmark)

A dane here. First of all, I feel a bit offended when you generalize all of us, saying "Danes do not think that throwing trash on the ground is wrong." That hasn't been my experience living here my entire life. There's definitely too many of us that don't care, but it's far from all of us.
Second, and this is just my personal perspective. I ride a bike, sometimes because I think the bus is too cheap, but mostly I actually do it for the excercise and the environment. Maybe this is not what most of your danish sources tell you, but I've known loads of people that do it for the same reasons.
And last, a comment on the re-use at recycling centers. I live just a couple hundred meters from a recycling center and I remember the time when the center outlawed the re-use of people's old stuff (we call it "at klunse"). The reason, at least in this centers case, was that some people would stop others all the way up the driveway to ask them if they could get whatever furniture or small thing they were about to throw out. Eventually, people started complaining that it was almost like harassment that people would ask them for their things before they had even entered the recycling center (A lot of us danes like to keep to ourselves). Just a quick FYI.