Todays "flavor of the year" styling is just a few years from being dated looking. Look back at a picture of a 15 year old sport bike that was "ultimate" in appearance at the time, yet compaired to todays sportbike old and un-refined looking...maybe even cumbersome or bulky. I think the difference with older bikes, of which many pictures have been posted as examples of what looks "right", is that for the most part changes were made so that form fit the function. Generally the bikes appearance became what they needed it to be to hold all the necessary components in place. There certainly were some gaudy styling details on some bikes (ie: emblems on side covers), but the overall simplicity of older bikes was the beauty.
I'm done now......