You're missing the point completely. A product needs to be produced. When somebody buys a product, the money pays for the production costs, so the producer is compensated for the expenses as well as the invested capital, so that they can continue to produce more products. This incentivises the production of goods that the public wants. That's distinctively different from what happens when somebody buys a bitcoin. The supply of bitcoins is fixed which means buying a bitcoin can't possibly incentivise the production of more bitcoins. The money doesn't pay for production costs, it doesn't pay for taking the risk to produce something, or for having contributed anything to society. It's purely and simply giving money to somebody for having bought bitcoin earlier than you. If you're fine with that, sure, buy bitcoin. If you don't, or if you want to penalise people who own bitcoins, steer clear of it (this is what I recommend).