I used to have about 25-30 which compared to some people on these boards isn't a huge amount. I got rid of a few to clear space but mainly to then fund the frames I wanted to stick with. i used to buy 2nd hand off auction or ex-demo, use them for a few weeks then sell on, and over time the collection just grew. One day I put them all together as they were in different parts of the house, various bags and like you, thought I needed a clear out!
I've kept my absolute faves and ones i just couldn't let go, and then the ones I use day to day match to match. I'm now down to 10. But always on the lookout for something else . . . .