when the supporting capacity of nature moves closer to saturation point, nature finds a way to keep things in control. when population increases, our feeling of self worth decreases. if we enough problems to survive, we do our best and our minds function at a life supporting level. We are designed in such a way as to grow by facing, tackling and overcoming obstacles. So we grow in the direction against obstacles we face. /in other words, our minds need obstacles to grow. If there are none, that is the most difficult situation for life. So our minds seek and discover new difficulties.