Metabolism is design, not random chance. Metabolism requires a designer. You’ll have to think of something else that doesn’t depend on the designs that God made.
“One day a group of scientists got together and decided that man had come a long way and no longer needed God. So they picked one scientist to go and tell Him that they were done with Him.
The scientist walked up to God and said, “God, we’ve decided that we no longer need you. We’re to the point that we can clone people and do many miraculous things, so why don’t you just go on and get lost.”
God listened very patiently and kindly to the man and after the scientist was done talking, God said, “Very well, how about this, let’s say we have a man making contest.” To which the scientist replied, “OK, great!”
But God added, “Now, we’re going to do this just like I did back in the old days with Adam.”
The scientist said, “Sure, no problem” and bent down and grabbed himself a handful of dirt.
God just looked at him and said, “No, no, no. You go get your own dirt!””
Get your own metabolic systems. Don’t rely on God’s in an effort to *prove* He doesn’t exist.
I love that example, “uh-uh, make your own dirt!” and have used it more than once myself.
Which shows that this scientist had no understanding of God whatsoever, or else he would know that if there is one thing that God cannot do, that would be to get lost.