Most markets are fun.
I love going to supermarkets while on vacation.
I like watching the stock markets.
In the last few years and recently, I’ve taken up decluttering my space. In doing so, I’ve donated many things and of the things that I think still have some economic value, I sell. In recent years I’ve taken up using Facebook Marketplace as the primary vehicle for listing my wares.
It’s fun to watch things you seemingly think are useless but there is someone out there looking for that exact thing (at the right price). It’s fun to transact too — you get people from all walks of life and it’s especially fun because it’s a win-win. You should see some of the people who beam when they buy an item a deep discount to the retail price or add something missing from their collection of this or that.