@mattbrowne – many people equate witchcraft (modern or otherwise) with superstition, eyeless newts, and the like. However, while there is an element of magickal thought in Wicca, I’ve found that it’s equivalent to the amount of magickal thought in, say, Christianity. (Spells and prayers, once you understand the workings, are very much alike, excepting that a prayer is like asking a favor in a passive way and a spell is asking a favor in an active way.)
After you get past that, I’ve also found that Wiccan belief has a lot to offer the 21st century, in many of the ways that @HeatherGrace wants to contribute. When you see the Sacred as being right here-and-now, as Wiccans tend to do (personifying the Earth and life as something sacred, to be protected), it incentivizes things like ecological awareness and conscious consumption, both of which are what the world needs to think about more than ever. On the other hand, when one views the Sacred as apart and away from the here-and-now (as some do, who concentrate on a distant Deity and afterlife as opposed to present life), one may tend to view this world as something to be used up and thrown away on the path to something “better.”
And then, what’s left? A kind of spiritual practice which provides guidance and comfort. Can’t fault that, if it’s what a person needs to get through the long dark night.