I do not like long meetings.
I do not believe long meetings are more productive than short meetings.
By "productive," I mean "likely to lead to concrete, helpful action by the individuals at the meeting toward a common goal."
Meetings do not go on for a long time because the individuals involved wish to be more productive. Rather, based on observation, I believe that meetings go on for a long time because 1) people bring up tangential information or misinformation that is not directly related to concrete, helpful action and 2) people bring up this information with the explicit or implicit goal of avoiding responsibility and/or direct, concrete action.
Therefore, all meetings should be short.
I know, universe, that in the next few months you are going to attempt to entangle me in many long meetings. I realize that you are an Random, Amoral Universe and that although the infliction of Long Meetings will frequently frustrate me, it would be a mistake for me to take the affliction as a personal insult. At least, I will try to remember that.
But, dear universe, I will not be an enabler of long meetings. In fact, it is my intention to make all meetings that I am a part of as short as possible. I believe 15 minutes is a great length of time for a meeting. Like a good salesman, I will always be closing.
And why, dear universe? Because I have better things to do, that's why.