Here is an excellent new blog post from Scientific American: "No tree is an island, and no place is this truer than the forest. Hidden beneath the soil of the forest understory is a labyrinth of fungal connections between tree roots that scientists call the mycorrhizal network. Others have called it the wood-wide web."
20 acres, previously farmed with tree lines, 36' of elevation change over 1,300 feet of south facing slope, 7,000+ trees planted so far in previously tilled acres at a density of ~500 per acre.
I think you're making an important point about the interconnectedness of beings. They are not just products. Their role is interwoven with other beings. Together, they help to keep the forest healthy, and therefore, to help keep us healthy.