Ha! Anything over two is a collection. But, you really need to rest one. Proven to be true - get two at least.
Ha, ah! A little variety is a good thing. I should at least try other sizes just to see.
Ha, ha, ha! Every self respecting man has to have a blade for every day of the week!
Ha, ha, ha, ha ... I'm getting steal from every country, in every size! I need a Kami too!! Oh and stones! Got to get stones! Hahahahah ... all the way to the poor house surrounded by a sea oh steel!!
Nothing wrong with collecting. I keep mine in shadow boxes in my den so I can look at them, possibly use one now and again, but generally use the same ones over and over.
Boredom is the only cure after you have been bitten. It'll come - but you'll have a nice collection!