It always bothered me that they needed themthe wands to do magic. In the first film/book, before Harry went to Hogwarts, there were instances of him using magic unintentionally without the use of a wand (such as turning his teacher's wig blue).
Why do they need them? Are there any that don't need them to intentionally use magic, if so, why?
Clarification edit: I mean are there any that are able to do it wellmagic well without the use of a wand?
