I am NOT the Packing Police. Your experiences, budgets, and emotional responses have led you to your own opinions and practices.
Year is 2014, location is Denver International. Exiting the airplane, I met an old friend (what are the chances?) and we chatted for ten minutes. By the time I got to the carousel, there was one bag left and it was not mine. I knew what happened: someone had mistaken my ubiquitous black suiter for theirs. The Lost Luggage Police chased them down and informed me that my bag would be delivered to my hotel in twelve to twenty-four hours.
I immediately went to the Denver REI and purchased a bright yellow North Face 22” roller; no more inadvertent bag confusion for me! On the return flight, I noticed (for the first time?) the large number of seemingly intelligent folks who deliberately dragged their slick roller bags and clumsy backpacks into the cabin, bumping into everyone else along the way, and who struggled mightily to force their carryons into the overheads. Why would anyone do that? I thought they were nuts.
Then my yellow North Face went missing.
It came home to me twelve to twenty-four hours later but the episode got me thinking those carryon folks might just be on to something I didn’t quite understand. So I launched the interwebs and dived down the onebag and carryon-only rabbit holes! What a bizarre community: enthusiastic proponents, rabid minimalists, extreme zero-baggers, committed brand loyalists, and some calm rationalists. I already knew how to pack efficiently from decades of ultralight backpacking and bicycle touring so adapting my older techniques to some new methods was easy and fun.
I sometimes need to check my carryon out on the jetway for smaller aircraft. I will take advantage of free gate-checking (but only for non-stop hops and only if my bag will not be going through the luggage handling system) but I doubt I shall ever revert to traveling with more than one carryon-sized bag and a reasonably compact personal item.