When I bought my house (in 1979 - as a single man) what sold it to me was the house was ok, but it was built on a 4 - car garage...
A veritable haven for what is now known as scrap.
I managed to almost fill that garage, that and two cars.
My partner and I still live in that house, but now I have retired, I realise the value of that scrap. So most of the stuff has been dismantled and reduced to scrap. Copper, aluminium, mainly. The steel, and circuit boards.
A fun retirement project that has so far resulted in some considerable $$$.
So, kiddies, the moral (excuse?) for keeping that junk is the scrap value!