Comment by butlike

True, but I can make my own boogers, and kind of do automatically, so that's pretty common. Some people get fecal transplants, which is rarer, but let's say if I want to build... I don't know, lets say a house. I can lay the bricks myself, which is a transaction against my lifespan (not just a transaction on a product of my body like boogers or fecal matter), or I can hire you. When you're hired, I essentially get two lives since I can do life things at a rate of 2x while you remain employed. I guess the real value comes in buying your time, not necessarily the product of 'you.'

Life is both scarce AND irreplaceable, which is why the valuation is so high.