"Because I don't quite see the point. A good steel, lugged frame of the right size and geometry and build quality is the same if it's built c. 1 956 or 2006. "
You can't be serious?! Significant advances in steel tubing alone provide for lighter frames. Frame build quality has never been better than now. Why deprive yourself - you only go around once. Treat yourself - you won't regret it.