I’ve been through this process this year and it continues. Although my collection was only at 7 (tiny in comparison to some) I have been through 20 or more to get down to 3. I’ve kept a Fender Jazz, Shuker custom and a modulus Flea, all for different reasons, I only really gig 2 of those 3. I’ve sold 3, with 1 pending, sold my pedals and some cabs and I’ve decided to get a custom built Status with the proceeds. I only have the one bass that I regret trading and I’m hopeful I will get it back someday as I know exactly who has it...😃
If you are in a position to keep them....keep them...