Parents, how would you feel if your child...?

My teen boys are into some of it and my toddler likes to head bang along. Maybe it was those years ago buying the onsies with guitars and such on it where I went wrong. Haha. Really I don't mind. I could possibly be raising a band. One of the teens can wail on a guitar and the other knows how to shout rock without destroying his voice. Anything is possible. Of course drugs and some of the scene is a bit of a concern, but so far my boys are showing some wisdom about that.