OK, the experience can go both ways:

Back in the fall of 2005, when I'd just picked up my first bike to return to the sport after a complete 28-year absence (and I mean COMPLETE, I'd never heard of Greg LeMond, etc.), I start tearing the Raleigh down for a complete repaint and rebuild. Having given my tools away twenty years earlier, I dropped by a LBS about a half mile from work in the hopes that the mechanic there could press out the crank cotter for me.

I walk into the store and am immediate gobsmacked by 28 years of changing technology. Well, they had two wheels, I guess that funny shaped thing is a frame, I recognize handlebars, can't find any shift levers, and there is a seat, so I guess they're bicycles.

And then I realize that the kid behind the counter is looking at my Raleigh frame with equal amazement. Turns out he'd never seen a cottered crank before.

Postscript: Over the past four years, said LBS has turned out to be a decent place to deal with, the head mechanic started wrenching bikes back when I did and was a wonderful font of information during the year or so it took me to catch up, and the kid behind the desk is a fairly constant riding partner. And yeah, they know me well enough to know they're never going to sell me a complete bike. They were completely amazed the day I came in and said I wanted to look at the Raleigh Sojurn.