How long have superstitions been around?

The very oldest pieces of writing talk about superstitions. It's highly likely that as long as human have been around, there've been superstitions. Homo sapiens sapiens (that's us) evolved about 400,000 years ago. The first superstitions are probably also from that period.

Answer

Not sure why this one got flagged as inflammatory or offensive (the mention of evolution maybe?) but I figured I'd throw my two cents in real quick: Superstition (religious/spiritual beliefs not recognized by the modern "big" religions as being real) is as old as mankind. As far back as we can go in the archaeological record there seems to be an unanimous use of amulets/totems/charms and as pointed out above, the earliest writings include practices that today, would be considered superstitious. It seems to just be an ingrained part of human nature.