I am sometimes working on DIY projects, be it electronics or home renovation things, for the same reason I started programming - it seems interesting and I would like to understand how things work and possibly make something awesome. I guess it is part of engineering mindset.

While my interest in computers resulted in IT career, I don't have the same expectations for all the DIY things that I do. I understand those are just hobbies that make life more interesting.

And I think that I still understand when to buy instead of DIY. :)