You can definitely move couches, beds, and tables from IKEA between houses, I've done it a ton of times. Yes, you generally can't fix it, but that's because you

You can definitely move couches, beds, and tables from IKEA between houses, I've done it a ton of times. Yes, you generally can't fix it, but that's because you bought the cheap particle stuff instead of their higher end thing. There are some things that will fall apart (wardrobes, kitchens etc), having participated in a few moves: I assure you that non-ikea stuff from the '70s will also have issues: panels will have bent, cheap parts will crumble, adjustments that were made to fit it to the original position won't work anymore etc. That is, even if you wanted, because the style of a 30 year old wardrobe is likely to not fit anything you will buy in this decade and you'll still not want it around. The idea of furniture that lasts a lifetime is dead because of the pace of modern fashion changes, not because you can't reuse things, the same way it is for shoes and clothes.