My main commuting bike is ~20 years old. Not quite "vintage" but steel, heavy, indestructible. I also have a Fuji from the 80s that I will at some point commute on. Right now I am having fun with it being my office bike - I'll ride it the 4 miles from my office to the wife's, or to the bank, expand my lunch options, etc. I love vintage bikes. I also love my carbon bike. I loved my aluminum bike before I sold it. My point is, just be happy with whatever you get, and ride it. The only sucky bikes are bikes that sit at home and never get ridden...doesn't matter if it is a wal mart special or a 10k crabon fibre Di2 hydraulic disc 10 lb bike.