Because a person's irrational superstitions should not affect the rest of society.
The test I used was "reasonable accommodation", in my opinion an excellent development in Common Law. Since the issue at question is trivial, I'm gathering you don't want irrational superstitions to affect society in even the tiniest of ways. Is that a fair statement?
Leaving aside the determination of what is "irrational", it is a very regressive stand to take. It is the same argument fundamentalists have made about homosexuals, Catholics, the transgender, the mentally handicapped, Jews, etc.
I don't want to live in a society where people have to leave parts of themselves at home no matter how trivial the affect to Society. There are plenty of irrational superstitions out there. There are plenty of things that were once viewed as sicknesses or superstitions that society has come to embrace. A society that sets upon itself to make a determination and suppress even reasonable accommodation presents a greater danger than a society which simply allows people to be wrong, so long as they are not unreasonably affecting society or others.
The question is too vague. What other questions do you have in mind?
I know we share a distaste for religious superstition. But, reasonable accommodation applies to other spheres of thought and action. I was wondering, if your uncompromising stance applies only to religiously derived actions or to other ethical systems and actions.
One of my staff has an irrational fear of Halloween figurines. I have seen her in tears when a scary doll was near her desk. I think it is a reasonable accommodation to ask others to help with Halloween decorations and to ensure they don't have anything near her desk or that will surprise her where she works in our office. If she worked for a retailer, I would hope they would be sensitive to her. Would you agree?
My mother has, what I consider, an irrational view of the sanctity of animals. I do not eat foie gras in front of her for this reason. If she worked in a restaurant she would ask someone else to prepare it. It bothers her that much. Just one item on the menu, she isn't a vegan. Should she leave her concern for the treatment of animals at home and not affect the rest of society?
A really good friend of mine reads too many questionable internet blogs. He has determined that radio waves are unhealthy for his family. No wireless devices in his home. I've tried to point out the EMR coming from our sun, but he is convinced we are all being killed. He might ask to work at a spot as far away from a wireless access point as practical. Is this the sort of irrational superstition that should not affect the rest of society?
Not to go ten rounds on a bunch of scenarios, I was merely wondering if you wish all irrational requests suppressed so they don't affect society or only those arising from religion.