i'm in my second year at hogwarts i can cast accio and avada kedavra
We all are whether or not we realize or accept it.(in a manner of speaking)
Of course paganism/witchcraft isn't new but Wiccan is. It's based on older religions but it is still new as a religion.
I think that everyone should make their own practices and not use someone else's creations. Do what you feel best. As long as you harm none ;)
Only thing that annoys me about wiccans is that they always say oh our beliefs go back thousands of years. It was invented in the 50's much like modern Satanism was in the 60.