I have a twist on this. (Sorry if already mentioned by another poster)
Most riders think of vintage as low-end, obsolete, undesirable stuff. So it follows - every vintage ride without brifters, new brakes, huuuge cassettes, etc
- is more-or-less a beater ride.
I usually ride my vintage bikes rather than 10sp Campy Ergo equipped CF, Ti, new steel bikes.

Therefore, celebrating the titled theme of this thread.
