Everything physical has a beginning and an end, including the sun, the moon and stars, the earth and everything on it, and each of us. Yes, we will all come to the end of our physical lives some day or other.
Most of us have experienced the death of a loved one. Children often experience the death of a pet before that of a family member. The sight of a lifeless body is very sobering.
Since the creation of man in the Garden of Eden, mankind earned the death penalty. As stated in Hebrews 9:27, “It is appointed for men to die once, but after this the judgment.”