The only part I'm slightly precious about is the (thin vinyl) gel saddle, which I don't like the idea of being pressed against anything abrasive (such as a brick wall for instance). There was also a corroded aluminium milk churn in the garden that was like sandpaper to anything that touched it, so I would avoid leaning the bike against that. It would go straight through paint like a knife through butter!
Anything else, I don't care. I actually quite like my bike having a slight 'patina', in fact.
In connection with this subject, I always think of the Piper PA28's I used to fly. They had to be kept in tip-top mechanical condition, but looked at close up, and everything about them was well-worn, aesthetically speaking. That's my attitude with my bike. Keep it in perfect working order, but try not to think of it as a work of art or status-symbol. Rather, it's a mechanical contrivance with a practical job to do. The joy comes from riding it.
Steve