Stand when the situation calls for it (3rd downs, 4th downs, etc), sure. But to stand for the sake of standing is idiotic. It seems like people that do this think this will win the game for their team... it won't. You are a fan. If you want to win the game for your team, tryouts are in August.
At the Iowa/Iowa State game There is an old couple that have seats in front of me, and the ol 'guy can't move around that well. The (sorry) Iowa fan and his girl that had the seats the next row down stood in front of the old man (and me) the whole game. There was NO ONE standing in front of the Hawk fans. While I could stand and see over him, the poor ol' guy had a lot more trouble and pretty much gave up after a while.