I love exposed everything in construction. Every plumbing and electrical problem that required me to call someone involved the thing being hidden for aesthetic reasons.

I'm currently in an old house in Vietnam and I had to add exposed PVC piping to route around a leak inside a wall that was also feeding mold.

Half of the work involved each time I call someone is understanding the hidden stuff + getting stuff out of the way to see the hidden stuff.

"Engineering types" have built much of the world most of us actually live in. Yet a core piece of engineering——maintainability——is pathologically persistent.