On the way home from visiting my brother-in-law's family in Ohio, we changed planes in Chicago. To avoid the baggage fees, we, like most of our fellow passengers, schlepped our luggage through the airport to the gate in Dayton. Of course, we had to gate-check it because the overhead bins were long-full by the time we could board (boarding group: infinity). The plane arrived in Chicago late, we waited 20 minutes for our baggage to be unloaded, and then we sprinted to (and barely caught) our connecting flight to Boston. Naturally, we had to gate-check the luggage for that flight as well.
Baggage fees brought U.S. airlines in 2011 a total of $3.4 billion. That amount is almost one-half of the industry's 2011 profits of $7 billion. To double the airlines' profits, the social benefit of which is highly unclear, society incurs many costs: