Legalization of same-sex marriage is not only a challenge to traditional ethics, but also an anti-human behavior. The reason for this is the following：

1. Thousands of years of traditional human culture have instilled in us the values of fertility and reproduction. Driven by these values, today's human society is prosperous and stable, with developed economy and rapid scientific and technological progress.

Second, homosexuality is not a scientific marriage. Due to the limitation of their physiological structure, their marriage is only the product of selfishness. They can't be pregnant and have children. If same-sex marriage is legalized, it may lead to a sharp drop in population growth, and the world population will be extremely small, and eventually there will be no one in the world.

Third, homosexuals may become negative because they have no mainstream values, and it is easy to get drunk today, which will affect the social development process.

Therefore, the legalization of homosexuality is only legal in a small scale in some western countries and does not have the conditions for legalization. Therefore, most countries still do not advocate the legalization of transsexuality.