Some ppl see Witch Craft as White magic, and should only be use for good deeds. That's not always the case, sometimes it is used to harm another person, and that is wicked to use supernatural powers to hurt those that are lesser. So witch craft is a dangerous thing if it is misused (that is if you believe in it or you are a skeptic)
well the definition on WitchCraft seems to be a bit subjective, but I think I would consider Voodoo a religion, where I draw the line between witchcraft and religion I dunno yet cause maybe witchcraft has a whole kosmology behind it aswell.
I think answering four questions namely: Who are we, What is the world, Why are we here and Who is god is what makes something a religion
I like your points Fire and yes Voodoo is a religion. Hollywood has done injustice to that religion with so many awful movies portraying it as Evil. Now, from what I understand there is such thing as black magic in Voodoo which it has another name (can't remenber it) but those shamans that practice white magic refer to it as Voodoo. So is matter of distinction rather than just opinion.