I tuned up the bike of a bloke who's a higher up in one of the bigger companies in Aus. Considering his position, his bike was disgustingly set up. The owner clearly had no mechanical idea, or even gave a shit for that matter, because it sounded like the bike was going to snap when riding it (before any servicing). The bike wasn't even worn out, it just hadn't been built properly and he hadn't bothered to correct it, and had just been riding it regardless.
It was a $9K bike, so literally the definition of 'All the gear, no idea'.