The problem I find, on crowded flights at least, is that if you don't have checked luggage and board late, you could find yourself without a place to put your carry-on, forcing you to check it.
I've had checked luggage lost temporarily as well as having to wait an additional 30 minutes to get it off the carousel so I try to carry-on when possible.
I've had checked luggage lost temporarily as well as having to wait an additional 30 minutes to get it off the carousel so I try to carry-on when possible.