Take an apple, cut it open, and put it on the counter. Leave it there, say, for a week, or a month, and you will notice something. The apple is no longer the apple you left it as, but it is now destroyed. Further, there is no repairing that apple to it’s original golden deliciousness. It is now, if you leave it long enough, brown slime, and food for the bees.
This world, like that apple, is broken like that apple. And, in fact, it was God that broke it for His own justice at the beginning, when the man fell.