Boxes

I'm on a freecycle group and I notice quite a few posts asking for or offering moving boxes. I always find this funny for some reason. We always keep all our boxes when we move, so we still have boxes from when we moved in together after we got married 5 years ago. And we don't throw them out or give them away because then whenever we move again we would have to go out and find more. I guess I understand getting rid of them if you live in a tiny apartment with no room to store boxes, though, luckily we've always had an attic or storage room to put ours. Another thing I don't understand is people who pay for moving boxes. Why pay for something you can get free from any fast food restaurant or store recycle bin? We always just went to places like Wendys and asked for boxes and they were happy to help us out.