just accept that is it s a bicycle and it will get scratched and scuffed with time?
I quite like the general patina of bikes as they get used.
The chips on the downtube from a screaming gravel decent.
The top tube scuffs from cafe stops.
The seatpost scuffed up from saddle bags on adventures.
The clamp marks form the car rack on the way to Scotland for the weekend.
The bubbling of paint on the back of the headtube where the road salt get’s to it.
I’d do the chainstay though, and maybe any other areas you know you rub excessively (my heels get the stays on both sides).
But then my bikes are usually steel, and a powdercoat (if necessary) is cheaper than helitape!
[edit – the big potato said exactly the same 30s sooner]