God also didn't want to make us perfect, then we wouldn't need God and would go against him. If you where perfect and lived a perfect life, nothing ever went wrong, would you really need God for help and guidence? No. You wouldn't. We are imperfect because God knows we need him, and he needs us to be imperfect.
If all humans were made in the exact image of God, don't you think we would all look the same? Most likly, but images are always distorted in the slightest of ways, which makes us all different. And God wouldn't have it any other way. He loves of for who we are, and not what we are. God Bless.