My Canon has locked up hard only once in half a decade of hard use, generating ~8TB of images in adverse conditions. It is sometimes left turned on for months at a time. I sometimes accidentally do terrible things with the power switch and SD card. Lenses are attached/removed without a care in the world. I've never seen a flaw in the function of menus or the corruption of a single image.
I cannot state the same for almost any other software product. I can use it like a tool, not like a computer. That's a sign of good software.