You have a serious problem! You are being distracted by the idea of selling off a bunch of stuff. Seek counseling and then get back to some serious tinkering. The most effective help for this "sell it off" disease is websites like this one and take two Primitive Archer Magazines and call me in the morning.
I speak from experience. I think ADD stands for "Additional stuff".
Seriously, I think people used to have to "tinker" with more stuff just to keep the household going. People had to be able to do lots of different things to manufacture, fix, improve, things for themselves. There are lots of interesting things still to be sampled!