The "greenest" material is the material that was not used, and the cheapest Black Friday deal out there was the deal that was not bought. It's surprisingly hard not to do or buy something as humans who happen to live in a materialistic and growth-oriented society. Since self-development seems to strongly relate to the things we own or participate in, we constantly fall into the trap of the marketing machine. Where, in the end, we become a salesman to ourselves; "This would actually help me improve my health", or "the new version does have features that I miss in the current version". The result? We buy.