There are lots of people into classic (1:1 drivable) cars. For example someone might own a super cherry “57 Chevy that they payed $50K for, whereas another person has one that was built all the way up and restored by them. I guess it’s the exact same thing as building a model vs. buying a prebuilt model, but I’m inclined to believe that the one who builds it for themselves is the one who has more pride in what they own, even if it’s not as nice as the one that was already built. That being said, prebuilt die-casts rarely look as good as a plastic model built by a talented builder.