Harry ji and Ishna ji, have you never heard of my favourite superstition: " It's bad luck to be superstitious"? Wrap your mind around that one for a while trying to find your way out.
Of course, the SRM roundly condemns superstitions of all types.
Superstitions to be real superstitions need to be utterly without a real world base. I do not consider avoiding walking under ladders a superstition, as that really can be dangerous in several ways.
Superstitions can be actually harmful. Think of all the poor, little kitties thrown on the fires of burning "witches" in medievil times.
Stevie Wonder said it best, I think.
https://www.youtube.com/watch?v=tXsxvdF481I
BTW, I shall continue to post songs with my comments because I think music is a wonderful learning tool.
I think our Gurus would agree. After all, Siri Guru Granth Sahib can be viewed as the most sublime songbook that will ever be. It is all meant to be sung, with instructions for the singing actually accepted as part of the sacred text. If my saying that offends anyone, I apologise in advance. (But it's still the truth.)