I’m a week shy of 71 and have carried a knife since I was 8. As with others, it’s in my pocket every day barring a flight or possible trip through a metal detector. 
My current favorite of the plethora I own is a #6 Opinel, carbon blade, of course. Light weight, it takes a wicked sharp edge easily, and makes folks look when I pull it out since most folks have never seen one, much less have any clue what it is.
While trawling eBay this time last year I came across a guy selling a variety of 11 Opinels. I won the auction, bought the lot of them for $88 shipped to the house which made them all much less than half price each. I took a half dozen of them to our annual mid holiday wing dinner with our 3 kids and their significant others. At the end of the evening I pulled out a ziplock bag with 6, dumped them on the table, and let them choose among themselves who got which one. 
Needless to say, they were quite a hit.
Out of the 11 I kept 2(both carbon blades), gave the kids 6, friends got the other 3.

My wife and I were invited to a small town graduation, back in May. There is a no knives on campus rule, but when we were helping set up graduation displays, a bunch of pocket knives were produced to cut string, decorations, etc. Not one raised eyebrow by any school official.

I also know first hand, there are rifles or a shotgun in a few of the pickups, parked at school, during school hours. Often, kids well below eighteen have chores to do out on the ranch or farm, as soon as they get out of class.