How does Taipei MRT differ from Copenhagen metro?

Taipei Metro covers more stations than Copenhagen Metro. It covers 117 stations (vs. 22 stations). Like other Asian trains, it has seats designated for the people who are in need. A poster in the train asks us to “stand up for someone in need” in a gentle and polite way, that is, “也許他/她有需要,只是你看不到 (maybe she/he has the need, you just can’t see it).”

 

 

In contrast, Copenhagen trains have fewer folding seats (for bicycles and strollers) and have no seat for those who are in need. Interestingly, I have seen many seats are available because only few travelers sit down rather temporarily. Why do and how could many Danes stand up whereas many Taiwanese sit down in their trains?