I administer several deceased estates (the process for which is to locate and prove the will (if applicable), gather in and dispose of the assets, distribute the balance).
As most deceased people tend to be in the 70+ age bracket, it is very unlikely that you can even comprehend the volume of "stuff" involved in that undertaking.
Typically, 1% - 5% of the stuff has any commercial value. There might be jewellery, an antique or two. I can usually get $100 for a working fridge. Unfortunately we live in a disposable culture - we are geared to buy new rather than re-use old.
Some small proportion of the rest of the stuff can be donated (ie. charities will accept it). The rest fills up 2-5 rubbish skips (6 cubic metres each) and subsequently landfill.
Look around your house. Experience indicates that on your death I'll recover approximately $900 from selling your stuff.