@Jake Hill Bamboo or adobe would be good in certain climates where the materials are already abundant. I'd hate to see someone cutting down trees to make space to grow more bamboo. Where you have abundant forests, it makes sense to use wood if it's done right. I live in an area that was heavily logged in the past. Now the trees are growing back, but they're growing too close together. It creates bad habitat, messes with the soil, and the trees end up being sickly. Thinning these areas out a little bit provides wood and also leaves the ecosystem healthier. They did this in the land adjacent to one of our state parks. The trees they left behind grew thicker and developed qualities like thick, irregular branches and burls. Rare animals like the pine marten and many bird species began living in these trees. In some places they left fallen logs on the ground, which is what would happen in a natural, healthy forest. This allows insects and fungi to thrive. The tree trunks reduce erosion and soak up excess rainwater like a sponge. Then they slowly release this water into the ground during the dry season in summer. Some logs were left in the creek here and there, creating pools where salmon and trout can spawn. Many fish populations are recovering. A lot of local timber companies now participate in a sustainable forestry program. It's like certified organic farming, but for wood and paper. We used some of this timber when we built our chicken coops. If we had gone with bamboo, it would have been transported thousands of miles, burning a lot of fossil fuels. I think the solution is using decentralized, locally produced materials as much as possible. This is better than the current model, where construction has been standardized to the point that a few materials are mass produced at an industrial scale and then transported across the globe. Also, the industrial construction model contributes to the problem you pointed out of building "permanent" structures on impermanent land.