I get your point but we're not talking about defying others advice to go after a dream job. We're talking about scaring the bajeebas out of the mom with two kids at the grocery store just to have on "man jewelry." And by that I mean carrying a knife just to have it on them with no actual need whatsoever.
I can't speak for others, but none of my knives are "man jewelry". And I don't just carry a knife for those times when I expect to need it, I also carry a knife for when a need arises unexpectedly. And I've experienced enough occasions in my life when I unexpectedly needed a knife to carry a knife whenever possible.
I find it curious, the "I don't care at all!" answers. I mean it's untrue of course. I don't believe there are that many psychopaths on this site.

Everyone cares at least a little. The person that doesn't care at all is the type that shows up to court or a job interview with sweat pants on. At the least, "not caring at all" is dumb and goes against your best interests.
There's a huge difference between doing what one needs to do to make it through the day, or accomplish what one needs to accomplish, and caring what people think.
There are many occasions when I don't carry a fixed-blade. Not because I care what people think, but because either the law says I can't (like going into a courthouse, or visiting my kids school), or because there is some business I want to patronize and I know the owner/employees won't allow me in with my knife.
But if I met any courthouse workers, or staff members from my kids school, or any employees from any business I patronize on the street, I couldn't care less what they might think of my knife. In fact, I couldn't care less what they think of me.
I don't believe that anyone in this thread has said that people should ignore the law and carry knives into courthouses. Nor has anyone suggested that people should carry whatever knife they want at work or to a job interview. Simple intelligence dictates that one should not try to carry a knife where it is illegal to do so, nor should one jeopardize their job, or their chance at getting a job just to carry the knife they like.
There's a big difference between doing what you gotta do to stay out of jail, or earn a living, or accomplish any other goal or task that one wishes to accomplish, and actually
caring what a bunch of total strangers think about ones knife, or ones self.