I came here to say the same thing - "steel is real" is totally true. I did have a Bianchi Pista Concept that was probably my favorite bike of all time, but a no-name steel fixed gear bike that I owned got way more miles and was far more comfortable. The carbon fork on the pista concept helped, but all-in-all it was a performance machine and not a comfortable one.

Anecdotally, and I know the cab material is not the only difference, my RAM 1500 is leaps and bounds more comfortable and pleasant to be in than my F-150. The RAM has a steel body, whereas the F-150 is very light/rigid aluminum. The steel cab does much better with absorbing the energy/sound from the road.