I'm at exactly one year of ownership since new in one week and I must say that I still don't valet it or have a single scratch on any of my wheels or under the front bumper...or anywhere for that matter. I still care...but I care less now. I spend less time washing it and still have no desire whatsoever to mod it. In fact, I would love to sell it and live somewhere I don't need a car because I only want a weekend sports car and nothing more. I'd rather never have to drive.
I'll still take care of this car since I spend a lot of time in it...but it will soon cease to hog up so much of my attention.