A slight variant here. I'm that way with household repairs; I'll notice every crack or brush stroke. Granted, I don't always do anything about it as my OCD has to be regulated somehow. As for guitars, I end up with an emotional attachment to them. I have a Yamaha RS820CR I am thinking of selling. Nice guitar but I don't play it much. However, it was a sweet gift from my wife so... its hard to let it go. I have a friend who is professional musician that says he never gets emotional about his instruments. To him the are just tools with some better than others.