I got back into photography three years ago and I started buying cameras that I liked and could not afford years ago. it is a more interactive form of collecting, as they get used. At the same time it is borderline hoarding and I have bought cameras and lenses I have not had the time to use. And I did that in a very short time span.
Recently we have done works at home and having to put them in boxes, I have realized that the number got to the point that it is not easily manageable and I wish I had less.
I sold a couple of "unwanted" items recently and I probably should part me with a few more ones, but at the same time i do not see the reason why I should do without, let us say, a Leica R8 although I probably would not have a lot of chances of using it a lot.
Arguably owning these cameras and relating to their role in the history of this industry is part of the pleasure and that is a form of collecting. I.e. signs of this are that you are happier when they come with their box or, in case of rangefinders, you start buying a few unnecessary accessories.
I think there is nothing to be worried.
When I saw the pictures of the leica meters, I realized that there is a path where you end up buying again the same camera as it is so nice owning and handling it that you repeat the experience, which happened to me a few times.