ou seriously don't understand anything about Wicca or Witchcraft. Please let me explain:
1) Wicca is a religion. There is no "Wiccan magic"-- Wicca is *not* a style of magic. People of the Wiccan religion use magic (most of the time; some don't), but it is not something we invented or made for ourselves. Wicca is first and foremost a religion, magic is not the focus of it.
2) Wiccans are not Christians-- we don't believe in the Devil/ Satan character; we don't believe the Bible is the Word of God. We don't believe Jesus is a savior, we don't believe there is anything to be saved from and we don't believe in Heaven or Hell. Our view of magic is not based in Christian thought.
We *do* believe in a Higher Power, in the form of God and Goddess (the masculine and the feminine aspects of the Divine) and we think Goddess and God put magic in the universe for people to use it-- it is part of nature.
3) Witchcraft and Wicca are not the same thing... Witchcraft is a practice; a skill; it can be combined with any (or no) religion. There are Wiccan Witches, Jewish Witches, Christian Witches, atheist or agnostic Witches.
4) Some forms of magic are about connecting with spirits; whether it is a bad idea depends on who you ask. Some religions/cultures (Christians especially) have a real fear of spirits beyond our world as they are taught everything is in context of good/evil. Other people of different religions/cultures don't see it as wrong, or dangerous as long as you use your head and are properly trained.
But it is absolutely not necessary to involve spirits when practicing magic. There are many types of magic-- herbal, folk magic, ceremonial, elemental magic, etc.
5) Honestly the only people I hear running around worrying about hauntings and ghosties and stuff are Christians. I've been a Wiccan Witch for almost 20 years and it seems to me Witches who don't believe in the Christian world view just don't seem to encounter demons or other types of dangerous boogie-men; it's a non-issue to us. Most of us see practicing magic as a very positive, beautiful, upllifting, spiritual experience. But then, nothing in our religion tells us it's "bad" or "punishable" or that anything is out to get us, so we don't have all those ingrained fears.
So much seems to depend on your world view and what you believe. But try to remember when reading/studying magic and Witchcraft that not everyone (not even most) will be coming from a Christian paradigm. Like when we say "dark" we don't mean "evil", we mean absence of light; hidden or unknown.
Here is a good link for an introduction I wrote: squidoo.com/witchcraftmagicandspells