I think there is a little claustophobia in all of us. If not that, then it must be extreme impatience.
It was raining this morning, and as I've come to expect, BART was late (9 minutes to be exact). The train was overly crowded. When we finally arrived in Embarcadero, passengers crowded around the doors. They heard a "ding", but the doors didn't open. A few seconds later, another "ding". Door still cannot open. The train operator finally announced that we were having door mechanical problems. We then heard a few more "dings". People waiting by the doors were getting very very uncomfortable. I don't get off until Civic Center so I was just watching them.
People were breathing heavily. Some were sighing out loud. Many shook their heads repeatedly while they waited and waited. A few even complained verbally, mumbling, "This is great. Just what I need" or "Damn it, we're trapped". Everyone around the door looked so uneasy and upset.
After one minute (pretty long for a door to open upon arrival), the doors opened and people dashed out like mad!
The door problem was fixed at the Powell station. We had to wait an extra 2 or 3 minutes. I was already late for my connecting shuttle so I just calmly waited.
Interesting observation though! We do live in a very impatient society. And I am one of the impatient people.