Well I disagree with most of you.

Other games don't do this. I don't see why this one has to. And it may be plenty of time for you, but it's not for me and a lot of groups I'm in. Not to mention I can't count the amount of times I've joined a group in progress only to see it only has 10 minutes or so left and there is no way to finish the run. Nothing like joining an instance and knowing you are going to fail before you even fight anything. So to say it's plenty enough time for everyone just isn't the reality.

It's a stupid mechanic and is greatly affecting my enjoyment of this game. I hope they get rid of it, else I may be packing it up over this one.