I'm not sure how useful this is. The furniture I have had usually wears out fairly evenly so by the time something actually fails the whole thing is in a pretty

I'm not sure how useful this is. The furniture I have had usually wears out fairly evenly so by the time something actually fails the whole thing is in a pretty bad state. Having it disassembleable might actually make it worse because instead of strong welds you have screws which can wobble around a bit and make the item less stiff. There are other items where this kind of thing makes a lot of sense though. My 3D printer is extremely easy to pull apart and replace parts for. I have a full manual for how every single bit goes together and the parts are usually generic things I can buy off ebay for a few $.