One-bagging has its place, but it's not "all the time." I love to one-bag it whenever I expect to have multiple destinations and am traveling via transit, for

One-bagging has its place, but it's not "all the time." I love to one-bag it whenever I expect to have multiple destinations and am traveling via transit, for example. Flying to Europe and taking trains between a few cities? Definitely! I have a Farpoint55 with a zip-off day pack so I can leave the main pack (with my clothes) in the hotel/airbnb/hostel/etc and carry my laptop with me in the day pack. I bring a minimal set of light, easy-to-wash, fast-drying clothes and pick everything in my pack with care. But plenty of trips don't fit this model. If I'm visiting my family or going to a conference, my luggage just goes car to airport, roll to the plane, roll back off the plane, car to destination. Then the same thing in reverse in a week. Weight barely matters - my luggage is rolling on smooth surfaces or sitting in a car's trunk the whole time. And there is value to optionality in what I pack: several different kinds of clothes, chosen to be appropriate at different kinds of events (rather than being super travel-friendly). So I use a suitcase or two and it's fine. Both models have their place - no need to be dogmatic about either!