How you react to minor paintwork damage is up to you.
I think trying to keep paintwork perfect is understandable, and you can keep your car looking pristine, but you have to take the hit on the cost of doing that.
Or one can take the touch-up paint approach, and accept a spotty car.
Personally, I've managed to come to terms with my car having mild acne.
I remove any paint over the rust, degrease with white spirit, then isopropyl, prepare the bare metal with Karust as a rust treatment, and them apply paint to finish.
It produces a finish that might make @Rooted wince, but it'll do me. As I have a white car, such touch-ups are hard to spot as it's quite a forgiving colour, but I appreciate you might want a perfect finish in that lovely metallic blue.
Bear in mind, you WILL get stone chips and other minor paint damage if you drive your car, so if you can get some expertise in touching up paintwork well yourself, that's likely to be a good investment rather than £200+vat to keep sorting out blemishes as you find them.
Personally, I have learned to accept that so long as it's not going rusty, I'm happy enough with the touch-up dots on my car, here and there. But I accept that others may have higher standards than me in this regard.