There is a spectrum everyone is on, where at one end is emotional distress at cabinets being ajar, and the other end is ignoring a smoke alarm chirping every 43 seconds for six months. Somewhere on that spectrum is, "I don't care for the doors but I don't want to be bothered to remove them."

We had some tall cabinet doors that we were particularly prone to hitting our heads on, so we replaced them with curtains. Did the same for some closets with sliding doors when I got annoyed with only being able to access half the closet at once. The curtains hide the clutter, and IMO look nicer than the doors did.

Yah, they do have utility though, they guard the contents from a higher degree of exposure to dust and kitchen exhaust grime and any splatter that should occur in the space that goes in all directions. Easier to wipe a more or less flat planar surface than the intricate surfaces possibly pervious surfaces of the contents.

Then you have to dust more stuff!

that takes even more planning snd effort than just closing them

if you have pets you sure do!