Makes sense.

However - the hobby aspect can manifest itself in other forms than that of collecting or otherwise accumulating multiples.

When I was interested in motorcycles as a young man I only owned one, I maintained a keen interest and enjoyed reading about and looking at other ones though. For me, the same kind of thing now applies to watches. Admittedly I have more than one, 5 to be exact, though 3 are in display cases and never really worn and one, a G Shock, is a back up and gardening watch and doesn't get much wear either.