People Waiting to Park

It's another day for on campus parking and it hasn't been any better. Lately i've been seeing people waiting for parking spots. They wait and wait until someone comes and leaves so they could have that parking spot. You should see the hustle and the determination on these people to get that spot. They fight over these spots, but what I don't understand is, why don't they walk? I can see if they need to go somewhere right after and they're going to be late, but if you don't have to go anywhere right after then why don't you walk? Everybody needs to exercise everyday and walking sounds great to me. So why don't you walk next time and think, it's better than rushing around trying to find a spot.