"pagan" is an umbrella term referring to many religions, including wicca. Wicca isn't an "offshoot" of paganism any more than christianity is an offshoot of monotheism.
But there's an important point here. You're whining about a religion you clearly know nothing about. As far as you know, it might be the best religion ever, it's not.. it's just a load of boring spiritualism, but at least I bothered to research what it is. And if there is one thing I can say about wiccans is that weirdness aside, they're a darn site more peaceful than you mental christians. They also have a religious requirement to respect nature. You should check out some of their morals.