Its not for resale value. I simply like to keep clean the things I buy for my car.
I like to cruise through the mountains a lot in my free time, and you know how those roads affect paint -__-
Also, with plastidip and that paint on top, I have the option to give my wheels a temporary color of my choosing. Then whenever I decide I want to switch, or to just use a clear plastidip, I can just peel it off.