Oddly enough our house is not cluttered, except for the dining hall. I cannot cope if surrounded by clutter. I regularly dispose of stuff on Freegle, ebay and at the local charity shop, getting rid of anything I can see no further use for, I am currently disposing of all the nursery equipment etc we accumulated when DGC were tiny. Now they sleep in beds, do not need pushchairs or high chairs, all that is going.
Everything we have has an active use. Its just that despite having a large work shed in the garden with power and light DH likes dickering doing a little bit, leaving it, coming back and doing a bit more, so he brings his projects into the house to do rather than keep walking up and down the garden and the dining table is such a useful large flat surface.......
For him the joy our new antiques hobby is that he can buy damaged items at auction, restore them to sell on and while it is wonderful to watch as doleful damaged items come back to life and beauty under his hands. I just wish he would do it in the shed!