Not always to hurt people, a lot of witches use magick to help themselves or others, or nature. It's a connection to the earth, it's not a
religion, but wicca is a form of witchcraft which is a
religion, worshipping the moon goddess and the horned god. Pagan is another
religion based off witchcraft, I don't know that much about pagan history and the meaning. Anyways, witches collect things like candles, herbs (such as, rosemary, lavender, thyme, basil) , water, feathers, sticks, flowers, pinecones, essential oils, etc.