You have some interesting points, and while I think the earth could hold a lot more people if we lived in more harmony with the planet, there definitely is an aspect there of people being so ignorant and stubborn that they don't really care what happens to the environment or rare species of animals or our air and water and food as long as they get to watch sports games and Jersey Shore or whatever. It's frighteningly sad and would be comical if it wasn't so horrible and tragic.
Though ultimately I agree.. I think the only way people can live in better harmony is if they have the truth, if they are kept in illusionary worlds they will continue to destroy themselves and the planet by being out of balance and harmony with such.