The thing is that if you play till the third or fourth Ot and then win you play your next game 2 Days later and that opponent did not play through five or six periods.
So your guys are beat down, exhausted and the others are fresh.
Which makes it unfair.
In a playoff format with a best of series you can do that because your opponent will be as beat as you are. But in a tournament where one win decides it all its better to go for it like we do now.
Also the Football did the golden goal thing during the Eurpean Cup in 96 (in the final germany won by it in overtime) and in 2000 France decided the semifinal and final with a golden goal in overtime (also european cup). We abolished it in 2002 and finaly in 2004.
It was seen as unfair for many and yes i see it like tha too. Why shouldn't the other team get the chance to make it even?