I tend towards the medium to heavier side (which means for many people on here, the heavier side ). Generally, my travel is solely for vacation. My carryon is filled with electronics. Most of my recent vacations have been cruises, which for me means I need to have a somewhat larger variety of clothes (daytime and evening). My next trip I'm going to be flying from home where it'll likely be cold, to a location that's going to be hot, and on the cruise expect to encounter a very wide variety of temperatures, so I have to plan for that. When I'm on vacation, the last thing I want to be doing is constantly doing laundry, and I'll be damned if I'm paying the cruiseline prices to have it done. I'd rather just take advantage of whatever baggage allowance I have and use it. I figure for this upcoming cruise, for my wife and I, it'll probably be 3 bags, plus our two carryons. We could probably do a little better if it wasn't for packing coats (I personally hate having to deal with a coat on the plane, and would rather stuff it in luggage).

Now, I'll admit, I'll probably be able to travel a little lighter after a few more cruises when I gain free laundry because of status.