I have a cotton bag in my car. I've been using it for 20 years. It was used 173 times probably in the first 3 years. I have a ceramic coffee mug on my desk. It's moved with me through multiple jobs over the last 25 years. It's been used tens of thousands of times. Some goods are naturally disposable like a Kleenex, but much more could be reusable. The math is right there.