> Why breed Purrstige Traits? Breeding a Purrstige Trait can be challenging, but it’s rewarding too. Because Purrstige Traits are time-limited, they’re particularly rare — and especially valued as a result. Plus, Purrstige Traits are always a nice visual treat, creating some of the game’s most beautiful and unique cats.

From the docs, lots of talk about value. Not much reason why. It reminds me of the Beanie Babies Valuation books. Made everyone scream over a $7 plushie.