[pmccool]

Video replays make for longer stoppages. To my mind, football is more enjoyable to watch when the action is more or less continuous. Replays would interfere with that continuity.

Where they have could some value is in dealing with automatic suspensions. If a player is wrongly red-carded, for example, I see no reason a replay couldn't be used to exonerate them and undo the automatic suspension that follows a red card.

[DaveChild]

Rugby has video replays, and these are only used when there is a potential try. It's easy to limit the video ref to perhaps situations where there is a goal scored, and maybe when there is a penalty is at stake.