Neither does it take an hour or two. If you have roommates waiting to get their own shower done, taking longer than necessary is just plain inconsiderate and might lead to someone messing with the tap.
So glad this isn't a problem with showering here. I live with one other person, in a complex, with glass doors instead of a curtain I remember living with my parents and dealing with this. While I was in the shower, someone would decide to do their laundry or wash the dishes at that very moment.
My brother said when he was in Nebraska, one apartment he was in would run out of cold water. The temperature would fluctuate some and then it would suddenly be boiling hot.
I just realized I have never lived in a place where this was a problem. When I was living with roommates in an apartment, I worked early morning custodial, so I was showering at 4 in the morning. And when I lived in a dorm, the bathroom and showers were communal, so it was just little stalls that never really ran out of hot water.
I really wanna take a hot bath now. That sounds nice.