Why is it any of your concern? People pay their money for their ticket, they can do what they like with it.
Get off your ****ing high horse
If I was a player it would piss me off. Perhaps not so much in games like yesterday's, but in the games that are 0-0 with a couple of minutes to go when we are desperate for a goal it would annoy me to see thousands walking out. I'd be thinking 'you stand there and shout at me and tell me what to do for 80 minutes, despite me being a hundred times better at my job than you are, and then you get up and piss off with ten minutes to go. If its not important enough for you to hand around the extra 10 minutes then shut the **** up shouting at me all game'!
I really don't understand this "if you leave five minutes early you get home 40 minutes earlier" thing. So what? Especially on a Saturday. You've spent the time, effort and money to go to football in the first place, so what's another 40 minutes when leaving early means you'll miss some of the best moments of the season?
Of course sometimes people have important plans in the evening that they have to attend to, but 10,000 people a week don't!