Bubbles,
I can't give you much advice, but I am where you are right now. I am afraid to count my workouts, but I am sure I have more than 1000
I know I do not need them all and will never use them all in my lifetime I get overwhelmed just thinking about what to do. I am just about to do a Marie Kondo on them.
"Keep what sparks joy and get rid of the rest" she says. That philosophy sound simple enough to me to help me pare down as I can think of workouts based on bandwagons that I could easily get rid of.
I bet there are some in your collection that you make excuses to keep but if you could really give yourself permission, you would get rid of in an instant.
I think the only thing that stops me from wanting to throw something out is when I think about how much I have paid for them and the fact that I have barely used it. If that guilt was not there It would be gone.
Sorry not much help but I feel your pain.