But that is not really true. The problem is identifying existence as only one form of self awareness. The laws of mass and energy insure we are alway part of this universe. The subset of that on this planet for our life form is the nitrogen cycle. In our human form we are overly impressed with our own awareness but that is also an aberration that cause us great suffering. People spend years working on meditative techniques to control and limit that disconnected awareness.

Why worry about that? There is enough to worry about that may be of value to others.