Buy it or build it?

It seems that many of us desire to find satisfaction or joy in material things. So for example, the desire to buy a new exotic sports car, or even certain clothes and fashion items. However, it seems that the true joy is the joy of creating it, making it, customizing it, and making it in general. For example, better to buy a basic car, and modify it then to buy already a hyper sports car. Also with design, better to design it yourself then to pre-purchase the design of someone else. Also with design objects which are also tools, like cameras, find less joy in the design, just take the simplest design possible of a camera and just focus on making your creative art.