The only reason I would keep watches I don't wear would be for sentimental (e.g. first watch, given by a loved one), financial or rarity reasons. I wear some of my Rolex very infrequently but keep them as difficult to replace (e.g. Hulk, where I might miss it) and I think prices will continue rising over the medium term.
I am thinking financials probably don't apply as much to yours, so I'd only keep if precious to you or difficult to replace (and you might want to).
A lot of yours look similar (e.g. first photo), but then I suppose you could say the same for many Rolex!
P.S. The fact you're thinking about it often means "Yes, do it".