@I like Skol mentioned bar shape. It does seem quite pronounced. I must say, I would like to try the modern dinky little drops but I don't want to lose the elegance of the quill stem.
I have just rebuilt the front end of my Graham Weigh 531 after an accident with a car. Had the bike been carbon, it undoubtably would have been a write off. It has downtube shifters in friction mode and what I refer to as my compact gear set up. 50/38 and 12-25. I am finding myself changing gear less often and rediscovering the older way of riding. There is a hill coming up. Put the bike in the gear you think you can get up the whole hill on and go for it... It is interesting/fun seeing if you guessed right.
Like some others, I only ride solo but for the huge majority of people, on the road; a decent bike is a decent bike. As long as bits aren't falling off and it has a good frame and wheels, a vintage bike will do all you want in style.