On the last few flights I've taken (domestic and international, on a couple of different airlines) the airline staff have been *very* strict about the size, weight, etc. of checked baggage.....but basically turn a blind eye to people with carry-on bags that are, oh, roughly the size of my house And with more bags than the signs and the tickets say are allowed. I'm curious about this. Why do airlines not enforce, or not seem to enforce, the regulations on carry-on luggage? Do they figure it's just easier to let them get on the plane with whatever, rather than force them to check the extra bags or large bags and pay for them? Or do they kind of not care what goes in the cabin, as long as it gets through security? Or is this just something about the airlines I travelled on?