I think it is universally true that women in general, and wives in particular, will never understand. The only exception to this may be the only child of a man who loved to tinker on cars, and has now gone to that great garage in the sky. These woman tend to take a rose colored glasses view of their hubands need to self-mutilate and perpetually black fingernails. For the men out there still single, if you are lucky enough to find one of these girls, you hit a triple, but if her dad loved diesels, you just got a grandslam.