I’m of the opinion that if the health and balance of a habitat (e.g. wilderness, wetland, etc.) is best served by the exclusion of humans, so be it. I’m the guy that heeds the warnings to not trample cryptobiotic soils; to not blaze new trails, or otherwise act in opposition to the best interest of the habitat as determined by those who I feel are smarter than myself in making those determinations, no matter how awesome it would be to get to whatever thing I’m being restricted from experiencing. In this life, it is not necessary for me to have an all-access pass for this planet.
I am heartened that there will always be places off-limits to the physical presence of humans. I also am aware that I drive a gas-powered vehicle to most of the trails I hike, so I am simultaneously saddened there isn’t a place left on Earth that is untouched by our environmental impact. I am at once part of the solution and the problem.
My comment about my hopes for nature in a post-human environment stems from this perspective. This planet is awesome. Nature is awesome. The idea that something so powerful and beautiful might not only heal, but thrive beyond my (or my species') ability to perceive of it doing so is very comforting to me. The thought of the birds continuing to sing, the waves continuing to crash, and, yes, the fire continuing to burn, without me here to experience it, suits me fine.