I’ll share something else that Kiltan told me. One of the reasons that makes the physical desirable in the first place, is it’s semi-permanence.
If you dematerialise and object and recreate it, it can look and feel exactly like the original, but it will never me.
This doesn’t matter for most things, but imagine it’s a family heirloom, like a grandmothers wedding ring where there were other rings created that look like, it, but it’s that specific ring and it’s history that matters. It doesn’t matter that you can recreate the energy down to the tiniest link to the old rings history, but you cannot undo the memories that you know it’s not the same ring. It’s not and will never be, and is very unlikely to get back the same sentimental attachment.
Now imagine the astral and even more subtle realms, the realms of the entities - nothing in permanent and everything takes energy (awareness) to exist. If a thing is completely forgotten about by all entities, it effectively despawns. There is no accidentally finding your grandmothers ring in the attic where no one know it was there - it would fade away and be lost, much like fabric turns to dust in the physical. (Again, this is Kiltan’s example and description, it’s hard to describe the images and emotions he gave me around it)
So the physical’s semi-permanence is very valuable, especially for a species living in slow time as we are. It buys time to explore, create and play with things, including hiding them and dealing with problems they cause with that semi-permanence. It’s not the same in the subtle realms.
I have seen fancy crystal buildings that had entities at each corner who’s sole job it was to keep the building existing and functional in it’s complexities. The building was like a tall appartment/skyscarper and lived in by any entities but they weren’t there all the time - and that could mean centuries away for them. Rather than recreate comfort it all the time servitor-like entities held it in place. We have to maintain buildings here too, but not by constant magickal effort.
Such is the benefit of the physical.
UPG disclaimer - this sounds quite mad, and many mages/mystics have these sorts of UPG and they’re all different and crazy-sounding, and that’s why we don’t often glurge them online. But for some reason this felt useful to share.
The upshot for the OP is, it’s all very well to create stuff in the astral, it happens all the time as people’s houses including the furniture have this happen automatically to an extent, hence why ghosts can sit down - they’re sitting on your astral couch, or the fading version of their old beloved armchair (note, the ‘beloved’ part matters)… but if you create an astral thing, be prepared to check in on it and maintain it.