I find I can't have less than 6 basses. Perhaps it's because I have a 6 space rack and I feel like it's 'missing something' otherwise. 2 of them are long term not-to-be-solds, the others are generally transient but a couple have hit the 12 month mark which is unusual (most go in 3 months).
Of the 6 I have, I could definitely 'cope' with just 2, but I know I would like diversity of appearance, and start collecting them again. Also, for me part of the hobby is finding bargains I can try out for a bit and maybe make a few quid, or at least break even. However since buying a house in the last month, I can see my disposable income is already accounted for for the next few years.