Remember, God gave mankind free will to chose. So chose and chose well. God never said that they will not be accountable, starting with Adam and Eve up until till this very day. If God didn't give them free will then they would have no choice and be free of guilt and therefor punishment. But having choice and choosing the wrong thing is punishable. With freedom comes knowledge and choice. Animals have less of a choice, and the vegetation world even greater. There has been a plethora of proofs on this very board proving God's hand, but as it is written "it's one thing to wear out man's patience but it's another to wear out God's".