Think i will never sell any of them (already told my son the today's value, so he has some pocket change when my time comes )
My first pin i got 35 years ago, bought my collection dirt cheap back in the day.
They are in my gameroom at my attic
Sometimes i play them daily, and sometimes i won't touch them for months. But they are always there, and i can pick up where i left.
Leave them alone for awhile, you will be drawn back, i am sure