What is kitty gacha for?

[Senta Garnburg]

I realized that for some time kitty gacha is offered everywhere. It seems to spring up like mushrooms. I wonder what or who it is for? Is it for sl residents who visit the arcade and love to play and collect gacha items or is it for new kittycats lovers who just started to breed?
I understand that you pay a small amount of lindens and you get a kitten but don't know what it will look like.
I believe for the seller it is a "nice" way of getting rid of low traited kittys but I don't understand what benefit there is for the buyer.

I am just curious.