I haven't had the need to bring one of my PCs to a repair shop in the last 20 years. And after reading the appalling results of a study about privacy in computer repair shops, I feel quite fortunate. Curiosity, visibly, is a trait common to all humans, but even more in IT people.
Thanks to my IT friends for helping me maintain my PCs, and here's hoping this highly interesting study will be followed by action to somewhat control that curiosity.