In the directive of the "persuit of happiness", it is in the context of achieving the equal ability to have those things and rights that are given to us by God, by you and all citizens. It does not provide the interpretation of "all things that make you happy". It is beholden to laws of God, not man. If you want to dress like a female and it makes you happy, then you can. But to expect acceptance in public and require others to acknowledge your choice of "personal happiness", directly conflicts a law of God. This law is "thow shalt not lie". It is not correct to allow that persons personal choice for "happiness" to be accepted due to the "truth" that is known and therefore can not be changed into a lie for a person to be happy. It isn't selfish to not accept it. It is just and righteous to hold the value of Gods commandments before others. For God comes first, not man. To better understand the "choice" of personal happiness and the direct disregard for Gods laws, a simple comparison of a greater and more acceptable understanding of a law of God that is broken, would be: Jeffery Dahlmer felt "happiness" when eating the flesh and "meat" of people, including children, he killed. If Jeffery was to come into your awareness and kill someone, then whip out his habachi, cook some of the persons body and offer it to you, would you accept it? Knowing that killing a person, then enjoying their body as a meal is against the law of God, what happiness do you achieve by purposefully accepting the meal? What would Gods reaction to your failure to be a unselfish to Dahlmer but selfish to God.
I am the way, the truth and the life. Jesus didn't say that so you could contradict it with "It's Dahlmers way, his truth that denies God, and the life you have, just needs to be slow roasted with some cumin, garlic, oregano, salt and pepper, paprika and some cayanne pepper, so it tastes like a spicy taco."