I've missed a flight before....by a really significant margin - although I kinda knew it would happen as I was being a cheapskate and my departure airport was about 4 borderchecks away from my last stop - I was relying heavily on a ship, train and coaches being where they would be when they said they would!
As for people complaining, I'm not bothered by it, I actually find it quite funny....I mean, in those situations, what can you really do? Fair enough, unless it's a situation where it's not just you (but your family etc. as well), getting fired, or missing out on a big event, but roll with the punches....
I do love airports myself, I used to have a lot of changing and waiting flights between here and HK, so I guess I'm used to it - you sometimes meet the most fascinating people (or complete freaks). Plus International eyecandy is always good