Where did the wood come from? Where did the calories you used to make the chair come from? Where did your tools come from? Who trained you? Who owns the property where your workshop is located? How much marketing effort did you have to spend convincing another human that the chair is actually worth $250? What potentially carcinogenic chemicals did you treat the wood with, and how much grant money is your government giving to doctors to treat the consequences of those carcinogens in the larger population?

All of those factors have hidden externalities baked into them that erode the net value you're creating. My argument is that it's all just a shell game where we're passing costs down the line to future generations while telling ourselves we're creating something valuable from nothing because it's what we need to do to sleep at night. We just don't perceive the longer-term externalities in a lot of cases.