Ah, that old chestnut. Don't get me started on the fans who decide that however exciting the game might be, they just can't wait to get to the bar or to their cars.
I once witnessed a bloke who turned up 15 minutes late, and went to the bar 10 mins early. He arrived back about 10 mins after HT and left for his transport with about 10 mins to spare + injury time. In all, he missed the equivalent of an entire half.
I mean, what was the point in going..?