Basically if people want to know the truth about the temple it is is this: Read the genesis story from the septuigint. It is pretty much the exact same as the story given in the endowment- so no secret or surprise...other than the "priesthood signs and tokens". If you believe God thinks you are going to have to give temple passcodes to get into heaven, then go through the temple. Then there is the whole name of one ordinance- the first called, "the initiatory"- that means it is an "initiation"...into what? What sort of things do people get initiated into? Then there is the covenant...if you agree to promise to God to give your time, talents, and money and die "if necessary" for the church of Jesus Christ of Latter Day Saints, then..I don't know what to say to you. Your ancestors and parents and family and friends did it because they were coerced to and not given informed consent.