GPS in kids' cell phones

Today I was asked if I liked the idea about GPS in kids' cell phones and I was kind of offended by the idea. I mean sure it would be a good idea for a 9-11 year old but for a 13-17 year old it is ridiculous. If you do not trust them then you have some major trust issues. As a parent you are you supposed to trust your kids and by putting this GPS in their phones it shows that you don't trust them, in result your son/daughter could end up hating you for the rest of your life. So a tip for the parents that read this if your kids are 9-11 use it when you really need it. Fine. If you don't need it then don't use it.