Guys don't hold doors open anymore

On Mondays, Tuesdays and Thursdays I go to College Library when I has a break in between classes. On one such day, I was about ten feet away from the door when I felt something woosh by me at a fast pace. I noticed it was this guy on one of those stand up scooter things. As he was passing me he said, "Allow me!" in this very dashing manner and opened the door for me. I giggled, because I never saw one of those things in person before, and it is as ridiculous in person as it is on TV. At the same time, I was jealous, because it would be so awesome to have one of those things. But really, what real purpose do they fill?