You are never going to be able to convince a non believer that bamboo can be a superior product in some situations than modern materials. Don't even try. A chest of drawers built by hand by a craftsman can still be serviceable, beautiful and valuable after 150 years. Made by hand, with care with quality tools by an individual with a strong sense of purpose.

A modern chest of drawers from a reputable store will be landfill in a generation or less, much like many inferior fishing products and many top of the line fishing products too. A well made bamboo rod will last a few lifetimes, it will be cherished and used, a useful implement with beauty and character. Yes, they take a long time to make and they are expensive, roughly the cost of two high end graphite rods. Quality bamboo rods will out last the synthetic, it will maintain a higher value and offer more enjoyment to the user and stay out of the landfill. Has anyone ever seen a graphite rod in a classic tackle book?

You get what you pay for in life, support quality tool makers and dealers who carry products with longevity. Buy the best tools for the job. Build your rods with pride and care as they will outlast you and your children, is that cool or what?