I've previously mentioned my not-to-modern bike, the Repco Traveller (circa 1980-something). The occasional teasing doesn't bother me too much. The Traveller still does the job, and i consider its age to be a built-in anti-theft device (along with a bit of duct tape wrapped around the seat for good measure).
Anyhow, today it was appreciated by a passer by, as i was un-chaining it. Yes, i do still bother with a bike-lock, though it's more to stop the bike falling over, than for security.
"Hey! Old school bike, man!" he said in an appreciative tone (apparently retro is cool).
"Old school's the best school"
"And easiest to fix"
"Yeah, true"(not that i have anything to compare with)