I guess I'd look at it in a "balance sheet" sort of way :::

Does it take up space that you "need"? Will it sell for an decent amount of money? Do you "need" the money? Does it have sentimental value? Might you have a "use" for it in the future?

If the possibility of "use" and the "sentimental value" are worth more than the "space" and the "cash", then you keep it.

Otherwise......."for sale"

just my $0.02