This discussion reminds of discussions around owning any kind of fine equipment, from cars to houses to firearms. Spending more on something that was more time consuming or complex to create, or uses costlier materials, is fine. I buy high-quality equipment because high-quality equipment is more enjoyable for me to use, and tends to hold its value longer. I enjoy playing the guitar. I enjoy it a little more knowing that I'm paying a high-quality instrument that makes pleasing sounds. I enjoy it a little more knowing that it's something my children will treasure when I pass. And I enjoy it a little more thinking (hoping?) that it was made by craftsman tasked with making something to a consistent level of quality and finish. But playing the instruments I've built myself gives me the greatest joy.