The USA, for all it's flaws, is supposed to be based on the idea that the people are not subservient to the Government's goals, but instead, the Government is subservient to the peoples' rights. That they can only be deprived of their rights through due process of law, as passed by elected legislature. Not a "scientific" book written by people who have no accountability to the population as a whole.
I fear you would not understand how important this is unless you yourself were involuntarily committed. It may well already be true that a malicious individual with enough knowledge could look at your current lifestyle and find a justification for committing you and injecting you with things against your will. I'm sure that such a thing could happen under the rules that you seem to advocate. I hope such a thing never happens to you, but I fear that there are many people who would not see the importance until it does.
It's as much a part of the human condition that power corrupts as it is that we are subject to mental illnesses at times. Many say that it will never happen here. I say that (to quote a line from Battlestar Galactica) all of this has happened before, and all of this will happen again.