My other guilty pleasure is cars, I have the same amount of basses as I do cars. The difference is, if I sell all my cars I’d get about £100k, if I sold all my basses, I’d get £100. The main difference is the fact the cars cost a lot to keep up, MOT, Insurance, Servicing and maintenance. A guitarist I played with years ago once said “ if it’s not eating any bread, why sell it if you don’t need the money? “. I’ve sold basses I regret and I’ve sold cars I regret. The basses more as I didn’t need to, as it wasn’t costing me anything to keep them, the cars are more justified as they were costing me.
If you need the space or money......... If not, I’d keep what you have. As I’ve found out, now that the kids are all grown up, married and left home ( withe the exception of a 22 year old daughter, but that’s a whole other story ), you’ll want to go back to enjoying playing again.