Two flights in a row an American Airlines passenger found that overhead bins were virtually empty yet people were being required to gate check their carry-on bags. They weren’t allowed to bring their bags onto the plane, even though there was plenty of space.
This is one of the most frequent complaints about airlines I see in social media, day after day, alongside damaged checked bags. Those two complaints are related! Who wants to waste time at baggage claim when they land, only to find their bags lost or damaged?