Well, to declutter my house I'd have to get rid of husband first. The majority of the "clutter" is all his "stuff" that he accumulates when he gets a new obsession. Right now it's plastic model kits of WW airplanes. He's got entire shelves of them. Doesn't put them together, just buys the kits. Even once he's over an obsession (sort of) I still can't get rid of the stuff. He's got John Wayne stuff, James Bond stuff, Star Trek stuff, workout stuff, National Geographic, darts stuff......and other stuff I can't think of. One of the reasons I'm convinced he's Pervasive Developmental Disorder (PDD) himself.
Good luck on the decluttering. Sounds wonderful to me.