Well since it paid, why not sell it, or give it to someone who will run it. I check Freshome almost daily. You can say looking at other people's home is pointless specially expensive ones because most readers will never live in such a house. However some people may just find it joyful. Just check your logs and see the ten most frequent visitors, ask a couple of them to run it.
This was an option I considered and discussed with a friend who is well known in the minimalism/productivity space. To me, it's actually more of a moral issue: is keeping a site like Simple Desks online good, bad, or neutral to the world. I'm sure it's different for different people, but I just couldn't shake the feeling that in the end it was detrimental to people's time. We have better things to do with our time, a…
That leaves you little in the way of daily activities besides pure charitable work. Does your short film make the world a better place? I doubt it.
It sounds like it comes down to what you enjoy, and that's great. The best motivation. Simple Desks though seems like the kind of site that some might get great joy out of.