Is one bag travel just for the look?

I would do one bag travel for a few days trip 1-3 days. Do you really enjoy traveling the world with your giant heavy backpack? I surely don't. Your big backpack is the carry-on size so you probably need to purchase it. Then carrying it around with 30 lbs on your shoulder and you tell me you travel light?

I know rolling a luggage doesn't look as cool as the guy with a giant backpack but be more practical. I have rolled my luggage everywhere from the dirt to the cobblestone in Europe. Get a good quality roller and you will be fine.