Diagram Of Dslr Camera Why Put Your Camera Lense First Into A Bag?

Why put your camera lense first into a bag? - diagram of dslr camera

I work at Best Buy, ironically (in the camera department) and I'm always DSLR into bags, and they all (or most) of them, diagrams of the camera is broken. Is there a reason? I mean, very expensive lenses, if the stock is no longer released, it probably safe to say goodbye to the window, and I think it would be more stable with the body on the floor of the pocket.