Originally Posted by Road Rash
I built up a 1983 Trek 720 this summer with modern components and it is the bike I have ridden the most from July through now, about 2200 miles. So I would say that if with modern components the bike is more likely to be ridden, then update it.
I've done a mix of new and old components on my Trek 520 and I thoughly enjoy riding the bike. I'd rather fix a bike to be ridden then worry about keeping things correct.
Well...I have a 1977 Schwinn that I won't change, but I won't ride it much either.