Why even have a clock if it doesn't really matter? Why not just make it first team to 3, other then the fact that some soccer games might last 2 days in that case?
Because the game still has a general time frame in which it will be played. Generally its less than a minute that the head referee gives in terms of leeway. It's not like it takes all that long for him to see if the scoring chance he's allowing will be successful or not. Like I said, I'm glad that soccer gives that option.
Let me ask you guys a question. Say you're a basketball fan, and a player on your team makes a last second shot to put you ahead at the final buzzer. The only problem is that he took the shot just a second too late and it's ruled that the basket doesn't count. Then the opposition wins in overtime. Would you really be happy with that?
In the end, all I'm saying is that I wouldn't be happy and that I'm glad that that situation doesn't happen in soccer..