Royal Prince Would you leave a rock concert before the band played their big hits in the encore just to beat the queue at the train station?
In fairness I regularly had to leave gigs early when I was a student in Canterbury, travelling up to gigs in London, because the last train left London at 11pm, so I would normally have to leave about 15 minutes before the end of the gig and miss the encore

But seeing 45 minutes of my favourite bands' sets was better than nothing.
Whilst I generally feel that there is no excuse for leaving football early (the last train scenario obviously doesn't apply at 5pm on a saturday), I accept that some people may have genuine reasons for leaving early.