I love clutter, give me all the clutter!!!
it makes building and live mode more fun for me, I wouldn't want to live in a stale house and I don't like to play in one either...
but I always make sure that things are useable, only minor things or stuff that the build has multible of are sometimes blocked by clutter but that is done intentionally (it's usually standing mirrors, as I like using them for decor and since there are more mirrors in the house it is fine if one is not interactable....same goes for counters, if there are enough left free than others can be cluttered).