Because there are legitimate uses for hormone therapy in children, and as you just proved, you’re not a medical professional. I might have an opinion about what you should or should not be able to do in a medical setting but in the end it’s none of my business and if you really believe in freedom you need to respect the parent-child-doctor privacy relationship.
Well, there may be legitimate uses of hormonal treatments on children. Depends on what the medical condition is.
I can only say that I oppose sex change treatments for children, and that the Alabama law sounds like good legislation.