no one really knows why a horseshoe is lucky. some say they're made of iron which keeps fairies from entering your home. one - who's afraid of fairies? and two - horseshoes are made of steel these days, so who knows how many fairies might be confidently strutting around your house mocking your horseshoe. some say the seven holes in a horseshoe are lucky. horseshoes these days come pre-made with eight holes so no dice. then there's a little parable about a blacksmith forging some shoes for the devil (which is absurd to put horse shoes on the devil, who as we all know, has cloven hooves). why did the devil need to rely on a simple blacksmith when he has plenty of minions to do his bidding? he certainly has enough fire. anyway, the blacksmith makes the shoes and they burn the devil's feet. now the devil is afraid of horseshoes? the devil, afraid of heat? absurd. and how is that good luck? just because the devil is afraid of your shoe above your door, that doesn't mean bad stuff can't happen. luck. why are they lucky? like all superstitions, it probably started with a dude having some good luck. some guy finds a horseshoe. for no reason decides, "this is good luck". something good inexplicably happens. his friends notice. "it worked for steve. i'm getting one." and despite the amount of rust poisoning, accidental cuts, and overall bad luck they experience, the horseshoe - along with the rabbit's foot - remains good luck.