All in one desktop computers?

Definitely not worth buying, as they are basically throw-away devices once they fail (much like a laptop). And the specs are usually much lower too, as they are generally not meant for gaming. On a traditional desktop pc, you can replace anything that breaks, as well as do upgrades like video cards too.

At work, we have a few all-in-one pc's---when they fail, they go into the e-waste bin, because they're not worth attempting to repair