CryptoKitties was intended to show a decentralized proprietorship scenario and the Internet tokenization of assets. And imply that in REAL LIFE you can do the same. It shows us that for this reason, the Ethereum blockchain may be quite beneficial.
CryptoKitties' position is good and is developing, thanks to its experience, also if you invest because, in addition to renting to other people, you can raise and sell different types of cats, the bad thing is that to use the ether network, you have to pay for all the movements you make and you know this Dapp may not be able to do so when your network is slow.
Every cat in the game is really intriguing and is totally unique. Technically, each cat is an ERC721, which you may take on your wallet or sell on DEXes, anywhere you wish. It means non-fungible assets.