Be Considerate When Carrying Luggage

Recently, when I’ve been riding the train, I have noticed very large rolling suitcases. Maybe these people are foreign tourists on a long holiday, maybe they are Japanese tourists who plan to bring back a lot of souvenirs, or maybe they are beauty queens with suitcases full of gowns and crowns. These large rolling bags are very inconvenient for other travelers. 

How big is the bag you travel with?  I don’t have a rolling suitcase and prefer to travel with a carry on backpack. Less is better, in my opinion.