I wonder what you mean by "should" in this extract.
Perhaps you are referring to a statute (or similar) which imposes certain constraints on citizens, or, perhaps, you are simply expressing a personal preference or belief.
If the former, then it would be a help me if you could remind us which statute requires a personal belief to "fit around the general public" and "one law for all".
If the latter, then I apologise for for the challenge, but if you are content to express a personal view about how others express their beliefs of what is true (which you have done), and also claim "one law for all", then I'll guess that you are also content that others will express their personal view about how others express theirs. That position, of course, leads to pluralism - differing beliefs pertaining simultaneously to the same life, fact, situation or statement.
For my part, I have every respect for any expression of profound faith, and have enjoyed the unexpected company of fellow travellers on some of my railway journeys who have shared their beliefs and faiths with me, much to my benefit. I hope I am lucky enough to still meet more people with such profound and committed beliefs and faiths who are generous enough to share some of their philosophy and their experiences with me.
As for seats, I remember giving up my seat earler this year so that I could travel in the vestibule with a Rabbi who was kind enough to share some of his photos, stories and practices with me. Over the years, I've given up my seat in order to talk with a Tibetan Buddhist, some Catholics, some Hindus, a CofE vicar and athiests (and also enjoying profound discussion with others while remainging at my seat - perhaps the most surprising was one of East Coast's crew discussing the "Tibetan Book of the Dead"). But I can't recall any of them telling me what passengers "should do".
Not one.