It might tale a couple centuries or more, but I think we're long passed the tipping point.
Too many people, multiplying exponentially. Limited food and energy supplies. Unlimited (seemingly) capacity to create garbage, to kill, to lay waste.
Every thousand years or so, some one arrives on the seen to "save us" from ourselves. A few hundred, then thousand, then even 10's of thousands of people get on board as true believers and practitioners. Millions and billions, of course, claim to follow the savior -- whether Buddha, Christ, or Muhammed -- but are incapable of actually practicing what those guys preached. Instead, millions and billions do what humans have always been extremely good at: twisting the words intended to save us. Instead of "Love yourself and love your neighbor as much as you love yourself" which is axiomatic in the preachings and teachings of true wise/compassionate men, the vast human mass follows appetites for greed "Love yourself and your love will trickle down to your neighbor." Or "Love your neighbor, but not everyone is your neighbor."
This branches out into the environment and its ecology. The word from the wise here could be stated "You have the entire world to cultivate and protect." But it's changed to "God gave you the world to exploit and use up."
Someone tell me if I'm wrong. But if I'm not, where's the hope for the continued existence of a species that resists efforts to control a growth of population that inevitably leads to more and more suffering and conflict on a planet that is slowly -- but at an accelerating rate -- being strangled to death?