Right. I'd say my Trek from 1981 is fully depreciated, so I can put more into it to keep it on the road (it was neglected in favor of the $40 Specialized Hard Rock with slicks that didn't need anything - including my time for maintenance). I kept telling my wife that going to the bike auction held by the local PD was "just for parts", now I have two bikes in storage, two hanging from the ceiling, two on the walls, and my side of the garage is 'unusable' because of four bikes on the floor. I think I just need to stop buying bikes, then I don't have to find parts... TCO mentality is fine, until your spouse asks you "how are you going to ride five bikes".