Bearing in mind I'm more into lowriders and cruisers, I probably wouldn't ever buy a bike that I didn't intend to respray, unless it was either a new reproduction or it had recently been painted. As for classic road bikes, I'm not big on sentimentality, so unless the paint and decals were in great condition, I'd probably repaint it anyway, maybe adding my own hand-painted logos so I don't forget who made it.