Health care professionals also have agendas, see the Raimer story. [0] I'm not familiar with the waiting requirements, but it concerns me that there is a push to let children transition. The "waiting period" of turning 18 is apparently too long. Despite having it's theraputic value demonstrated, suicides among those who transition remains high. [1] (The paper linked attributes this to harrasment and discrimination, obviously some disagree.) Plus, there is new attention coming to people who transition and decide to go back, showing that it's obviously not always a successful treatment even though it is billed as such. [2]