A considerable portion of people who are frequent flyers are those who enjoy backpacking. Usually, backpackers stay in hostels or couch surf, and it's best to keep little things with them. Especially if you're staying for only a few nights at max, it's not very convenient to unpack all your belongings. An excellent tip for those who like to travel this way is to consider packing in a very strategic way.
It's easiest to only unpack the things you need at that moment or for that day rather than unpack your whole bag. Also, consider packing the things you need most on top of your backpack for easy access.