If by tame you mean civilized then yes, religion has kept man tame.

Religion has also created organization and infrastructure where man alone couldn't be inspired enough to do it. You can rag on churches all day but where would modern publication be without the church? Where would humanity be? Religion is an evolutionary tool that has shaped social structure and created standards where there were only animals.

So go ahead, pull the steeple down if you think people can handle your "truth".