I'm up to 16 basses (plus guitar, plus drumset, plus PA). They were starting to fill up the basement (I know most folks in UK don't have a basement) but my wife was starting to catch on so I came up with a new plan. I started mounting them on the wall around the house so she wouldn't notice the pile growing up to the ceiling.
Problem is I think she's starting to catch on.
I think of them as fine art hanging on the wall ... while I'm afraid she thinks them more like rubbish (but if she ever knew how much I was spending on that rubbish .........