I'm between yes, I do use it, and I'd use it if it's updated. I have a fully furnished home on both towns, though I've had difficulties recently resulting in me refurnishing the home completely, and having an item stuck in my housing inventory due to a glitch, but unable to take it out, let alone use it for its original purpose in the inventory.
✮ What kind of furniture / decorations would you like to see?
I liked when the cash shop released a set of angelic and demonic furniture, but a variation of furniture sets, even if released on a quarterly basis (more time focused on avatar items), would be cool. Extra floors or rooms would be cool- mix up theming each room, instead of each house being a one-room flat. Or let furniture ideas go to gaians, like design furniture options (tear a page from IMVU or Second Life, for instance, with people designing and selling their own furniture, or do multiple contests and reward winners). If I was asked specifically what furniture I'd like to see, honestly, surprise me since I'm devoid of any precise furniture, but I do think more should be added. I'd say just borrow ideas from an IKEA catalog initially, but a lot of the cheap furniture available already does that.
Animated furniture, like strobelights, disco balls, more artwork (another contest idea), lava lamps, loft bed with space underneath. More themed furniture other than angelic/demonic.
✮ Do you currently use housing? If not, what would make you want to use it more?
I always liked towns (1 and 2) and housing. Meet random people or make new friends or meet current friends in there, and the idea of IMing and controlling an avatar is cool- I prefer it to forum-talk, personally. But it's gotten quite glitchy, both old and new towns. Housing isn't exempt, either. Some of my items have gotten "stuck" in my housing inventory, but I cannot use them to decorate with. Or if I go into old towns, some houses simply won't load.
✮ Is your house currently decorated? If so, with what?
It is, yes. Anything expensive gaia gold could buy, I have, like that gothic victorian set, piano, etc. Even used an avatar item as furniture too. Was pretty cool. I'd buy the old furniture bundles released in the cash shop too given the chance as well. Or look forward to buying new ones!