I have a really wide stride because my legs are long (so I'm naturally going to move quickly) and I don't like dragging my ass. Straight people walk fast too, tho.
I am and I walk really fast....although that's due to me always arriving to school 5 minutes before class starts (High School and College) and I'm usually parked at the very back so I power walk to class, from then on, it became second nature to me.