The view that treats puberty and pregnancy as undesirable processes stems from a more fundamental shift in thinking. Society has slowly abandoned the Christian worldview and its theistic implications. If there’s no God, then there’s no Creator who made our bodies to operate in a certain way. Organs don’t have a teleology—a way that they’re designed to function. If there’s no design, no standard, or no optimal way for organs to operate, then there can be no substandard or less-than-optimal way they function. A uterus can gestate a fetus or not. It can grow fibroids or not. It can be kept in a woman’s body or removed. Likewise, it is reasoned, genes and the endocrine system can progress a body through puberty or not. We can accept the process of puberty or block the hormonal pathways that lead to it. There’s no way our body is supposed to be. It just is, and we can do what we want with it.
As a result of this worldview shift in our culture, some people think it’s possible that any process of the body is optional. That’s why they think puberty might need consent. Indeed, even life itself is a matter of consent for some, which is why physician-assisted suicide is gaining in popularity.
Alan Shlemon, Do Children Need to Consent to Puberty?