I've known about wheeled crates forever, but resisted the urge to purchase one. I think I had the mentality that buying one would mean I was weak (or that I was taking too much work home with me). But lugging heavy bags that threaten to break was not working for me. So I caved and picked up this fella today. Just rolling him through the store made me realize that I should have bought one years ago. How many of you use one of these guys?