That's the problem, gender isn't something you can change on a whim.
I get it, we all wanna know what it's like to be the opposite sex, but after all the life-altering procedures and eventual regret, is it really worth it?
Call me transphobic all you want, but I simply don't want people doing stuff like this just to regret it in the end, it's really saddening when that happens to people.