kind of like all the people that raise cattle because they enjoy it even if they don't make much money or even lose some, or those that work the land because it's been in the family for generations and it's no longer real profitable but they love it anyways, or those that go take the kids fishing in a boat they make payments on and even though it would be cheaper to go to a seafood restaurant they just enjoy being with the kids, or those that just seem to find some kind joy in disparaging others on a forum because they either don't have a lot going on or they just enjoy that.
All of those things are entertainment of a sort but never a real necessity any more.
Bye the way Oscar Wilde was a playwright and a poet who created things that that were positively unnecessary but people felt it was important to either go to his plays or read his works, strictly for enjoyment, but I doubt if it was a necessity but at least he had a little insight on himself