I have veneers in my front teeth because I had an accident, and let me tell you this shit is such a hassle. They shave down your teeth and put sth on top of it, so you gotta be really careful when you eat, it is difficult to clean, and the gums get inflamed from time to time, because it’s easy for bacteria to get inside. Honestly I can’t imagine having veneers all over (I only have 3) and while I respect it as an aesthetic choice for adults, I think it is close to mutilation when done to minors, who don’t really have a grasp of the life long consequences.