Reality is much messier than "There are people and their bodies and their wishes."
There are whole categories of people who we consider not well enough to make good choices about their bodies and lives, for a variety of reasons
Children are not emotionally mature or responsible enough to make such choices
Mentally ill people are sometimes in an altered state of mind where they are not making good decisions that are consistent with their regular state of mind
Some people are very suggestible and will more or less agree with anything that someone else is telling them to do, even if it is not in their best interest. People who have just received bad news (like a scary medical diagnosis) can easily fall into this, and just agree with whatever someone tells them
It's all well and good to want to respect people's wishes for their lives, but society does have some responsibility to ensure they aren't being pressured by outside forces into acting against their will or against their own interests
That's not authoritarian, it is pro-social
There are whole categories of people who we consider not well enough to make good choices about their bodies and lives, for a variety of reasons
Children are not emotionally mature or responsible enough to make such choices
Mentally ill people are sometimes in an altered state of mind where they are not making good decisions that are consistent with their regular state of mind
Some people are very suggestible and will more or less agree with anything that someone else is telling them to do, even if it is not in their best interest. People who have just received bad news (like a scary medical diagnosis) can easily fall into this, and just agree with whatever someone tells them
It's all well and good to want to respect people's wishes for their lives, but society does have some responsibility to ensure they aren't being pressured by outside forces into acting against their will or against their own interests
That's not authoritarian, it is pro-social