Making post consumer plastic into lumber doesn't wipe away the depletion of non-renewable resources nor the environmental hazards posed by plastic. Sure, we have all this stuff and let's do something with it, but, if that's the extent of our conversation regarding plastic, that it is an immutable fact of life like the sun rising and falling, then we are not doing our job. The evidence of the harm that plastic's creation has unleashed needs to be addressed first and foremost. If plastic can be made from renewable resources and in a non-polluting way, then by all means lets make lumber. Until then, lets figure out how to clean up the planet.