We are rightly concerned about our environment, our living space, our air, our water, etc. But our inner peace, our soul, our eternal existence are so much more important. Common sense tells me that the earth is not to be mankind's permanent abode. First of all, the earth is a finite body, so it's surface area and its resources are limited. If the human population keeps growing, one day we'll run out of space as well as resources. God would not have put us on such a planet if we are not going to come to some kind of an end one day. That end could be his Second Coming, I don't know. So the #1 issue should be our own eternal survival, as each of us will only live a short time on earth and be gone.