Land is necessary for human survival. Religion is not.

How isn't if? Values begin with religion, you can need "remove" religion.

I'm atheist and have plenty of values and morals i've discovered and developed over the years. It's called being a functional member of society. Normal values and morals are taught in plenty of places out of church. Religion has long past served it purpose of instilling values into the birth of a civilization through fear of going against it. The only purpose is has now is as a way for humans to deal with their own morality. But the bad end of the extremes of religion are outweighing any benefits it has.