To dislike the 'Santa' concept is really killing magic, OP. I agree that all the commercialism attached to it is sickening, it really is, but you're wrong to connect the two.
You can control commercialism, your kids don't have to watch tv with adverts - this is the biggest form of planting seeds in our children, yes? They don't have to be taken to Toys r Us etc.
My kids hardly watch English TV, it's all S4C's 'Cyw' with us. The beauty of this is that it has no toy adverts, only mainstream 'boring' ones. They've only ever been to Toys R Us / any toy store once in their lives (DD2 aged 6 and DD3 is 3) so they don't ask for a plethora of items. DD2 wants a wheel barrow 
Also, we've just spend the weekend making salt dough decorations and gifts, driving and walking around looking at christmas lights, are baking cakes as presents and generally have a festive time, free of the crap. I'm no super mum, I just get stuck in into what's important for me and mine.
You're wrong to blame the magic of Santa. You are right to hate the commercialism attached to it.... so don't buy into it. You're choice.