I have no location pins near me, and if I go to Disney and see a pin they are crap broken. So in order for me to get variety I have a lot of pins in my home. I know 8-10 people who have collections, but they are all 30+ minutes drive and it's not easy to get together so to me having a large collection is nice.
I can have a pin that I don't play for 1-2 months because I am playing a new pin I got, but that doesn't mean I want to sell the pin, I like to have it and I will get around to playing my pins just don't play every pin I own every day.
I would have more than 10 if I could.
On a side note, I got a vacation house and moved 1 pin there PotC which I don't play as much at my main home because I had it for 10 years. But since I am only at the vacation house like 6-8 times a year it gets played when I'm there probably just was much as if it was in my main collection.