I think I'm the "worst offender". Not only do I mix and match components that I like willy-nilly, most of my bikes are 70's or 80's 120-126mm rear ends, I almost always spread them to 130mm (the horror!). I also often take a torch to them, add new braze-ons, and repaint (blasphemy!).
Now I do have an early 50's Rochet that will be restored this winter, that bike will be kept original. Gotta draw the line somewhere...
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If someone tells you that you have enough bicycles and you don't need any more, stop talking to them. You don't need that kind of negativity in your life.