Since 2000, I have built all my computers. The lone exception is my current laptop .
I started with a “digital kit” in the 70s. Went on to home computers (Commodores, Atari, TI etc. in the early 1980s. When I switched to PCs I built everything that was not a laptop up for many years with the exception of used machines that were bargains or computers people gave to me that were broken.
But most of my computers have been laptops in the last 20 years... They are just so darned convenient. I bought a couple super slim desktops a few years ago to use as media servers. But now I have found that mini-PCs have a lot of advantages for what I am currently doing, partially because they are a lot easier to get into than most laptops.