Aleph5 said:
Not to rehash, but what if all the wood is gone? Could it become extinct, not to return ever?
The nature of forests is cyclical. If we cut them all down at once we will die from lack of oxygen and then we won't be worried about such foolishness as music. Even if we perished this way, it is likely that the forests would return in less than 1000 yrs. They don't need much O2 to get started.
Aleph5 said:
What really matters is whether it's sustainable. Can it be replaced as fast as it's harvested?
Sustainability is a separate issue. Even if we use up all the trees, eventually they will grow back, and much sooner than any fossil fuel could be naturally produced
Aleph5 said:
And what do we do for 200 years while waiting for the next Brazilian Rosewood?
I think most players and makers would agree that walnut, mahogany, or other woods would be better substitutes than CF or other material, unless you like Ovations.
Aleph5 said:
OTOH, there will always be oil in the ground. It will just get more expensive to retrieve, until the rest is abandoned for a more economically viable alternative.
And the more economically viable alternative is?????
Aleph5 said:
Also, the amount of oil going to CF, let alone for musical instrument use, has got to be negligible.
There is quite a bit of cheap energy used in the production of CF. It is not just that it involves petroleum derivitives, it requires engergy beyond what is received from the sun (the only new engery that comes to earth).
Aleph5 said:
Does anybody know whether many of the precious woods used, like spuce and pernambuco, are sustainable? Increasing price and/or declining quality would be indicators against.
Any tree species can be responsibly havested and most can be plantation grown. Pernambucco is related to the Black Locust and Honey Locust trees. It is actually a remnant tree from a former colder forest than the one where is currently persists. Given that, it would be a more difficult tree to grow. It doesn't even belong where it grows, if you follow me. If one were to plant the seeds in a suitable environment, it would take only as long as one cycle to maturity to establish a sustainable plantation. I believe there are already some being grown this way in Brazil. Wild harvesting could be abandoned. Spruce is a short lived tree relatively,- less than 500 yrs. It would be easy to grow these in a plantation (like Christmas tree farms in Pennsylvania, etc.) Some American furniture companies have invested in their own forests and limit harvesting. It could easily be done by musical instrument makers.
Aleph5 said:

How on earth are you doing this? I wish I knew your secret. How do you avoid plastic and traveling, just to start with?
I just say good-bye one thing at a time. I still use gas and plastic just seems to come with everything, but these are things humans have only had just lately. My grandfather didn't have any of that in his younger days and people lived fine, maybe better in some ways. If I live long enough, I'll be living like he did in some ways, perhaps with some technology surviving in an economically available supply. It's not a matter of how you give it up, just when. What is definitely not sustainable is the current consumption of energy nor most of the products and materials that cheap energy makes available. We didn't become oil dependent over night and we won't become oil independent over night either.