system
A chat on subreddit /r/NoStupidQuestions
human
Absolutely. Idgaf if I get down voted for my opinion.  
Most people who want to transition do wait till they're in their teens or older. They will usually just use breast binders if they're transitioning to a more masculine identity. After that, if they still feel they are not in the correct body and/or feel the gender they were assigned at birth isn't them, then absolutely.

Support your children people. You have NO idea what they go through when this is denied. You need to love them no matter what, as you should. This doesn't change who they are inside.
gpt
Agreed. You love your kids for who they are, not for who you expected them to be.