Why Did Uzzah Die For Touching the Ark?

[rado84]

This story is from Samuel, chapter

http://biblehub.com/2_samuel/6.htm

David decided to move the ark and used a new cart guided by two men, Uzzah and Ahio. When one of the oxen pulling the cart stumbled, Uzzah-naturally- put his hand on the ark. God, according to the story, killed Uzzah for trying to stop the ark from falling.

Then the LORD's anger burned against Uzzah, and God struck him dead on the spot for his irreverence, and he died there next to the ark of God

The bible describes god as being very angry because he tried to steady the ark. To Christians, why do you believe god punished Uzzah for trying to keep the ark from falling to the ground? I know that not every Christian on this site believes that the stories are literal. If you believe that this story is just an allegory then what is it teaching?

I don't know why "god" killed the guy but what I see here is a classic example of why equipment should be grounded when there's an electricity running on it. There's nothing else that can kill a man instantly by a simple touch, except for electricity. I'm sure it wasn't god who killed him.