Not sure I quite agree with that, I have become quite attached to my bike over the years upgrades have been done as things have broken or worn out i,e, shifters from 9sp Sora to 10sp 105 when the right shifter failed, bars when a thread got stripped in the original head set (I got an oversize headset by mistake) and what a difference to riding on the drops they made, cover 5,000+ miles a years there is usually something that needs replacing once in a while and i take that opportunity to put a little better kit on the bike if I can afford it.