The only reason I think nobody believes in witchcraft is because of the Salem witch trials. Nobody was a witch, yet, they WERE witches.
Everybody is technically a witch. We believe we are at a young age, but powers don't come then, or at least not naturally. When they ARE old enough, their parents tell them magic isn't real (but it is). So they leave off angry that magic isn't real, thus they can't really get their minds changed. So, only a few people (which is really like 100 million, but that's not alot anyways, or at least not for the population we have now) get to be witches since they believe.
We have the power to believe we ARE witches. And let me explain this using an example that doesn't include witchery:
So 2 men go in for allergy medicine. 1 is a sugar pill, the other is the real pill. They both leave off and have their pills.
They come in the next day and the man with the real one was healed more quickly from his allergies. But the man with the fake one was healed quickly too. Why? It was all in his head.
Identify that last sentence. "It was all in his head." You see, it's in our heads that we're magic, but it's true though, because we are thinking strongly of the paranormality within us, thus concluding we are magical. This is why we are different from everyone else; it's actually in our heads, not in theirs apparently.
So basically, every human is technically magical, yet they are told that magic isn't real, but it is...
If you get what I'm saying, you should agree with me. If you don't, that's your choice. BUT REMEMBER... this is a THEORY. This could be true, it might not be true. But that's for you to decide, and if you think it's true, don't feel like you're nothing special because you're magical; you're the 1/10,000 people who actually got to believe they are magical! That's kinda special there.
For those who don't believe me, again it's just a theory. Nothing to have an internet war about or anything. Just say you don't agree, and continue on with your lives and leave this pointless topic, eh? =3