I'm thinking of buying my son a Casio G-Shock for his next birthday, he's a landscaper and is hard on his watches.
it will never be a collectable, but I think that the watch as a collectable/investment is something that the people in the know will continue with for a very long time.
"Watches of the mechanical and high-end variety started to mean something different to buyers where the concept of utility is there, yet it is no longer the main-driving force for a purchase. A mechanical watch now is removed from the fast-moving world of disposable electronics that are chasing after the next technological improvement, where there’s a short life cycle of obsolescence given the moving target that comes with continuous innovation."