The same as Chronometer i never bought second hand watches.
Why?
I do not know, but i like if everything shines, glitters, and pops out.
Buy new gives a start for a watch, and i have no message for the journeys a watch made on a wrist of a pre owner. Even famous people.
The scare of buying fake is huge for me, so if it is not possible to get the watch new at a brand boutique, i go lower and take an Omega from an Omega AD.