All ERC-721 tokens are like that. Once you receive an ERC-721 token, it is there on the Ethereum blockchain forever.
I don´t think those kitties will be long term valuable.... they were valuable only when it was released, now the prices are just down AFAIK. There is no reason to pay a high amount of money on those kitties.
Well, that's disappointing. At least, we get the true purpose of Non-fungible tokens for Blockchain gaming. But for them to become worth something, there needs to be demand from people within the mainstream world. Cryptokitties probably lacks demand due to the limitations of the Ethereum blockchain (in terms of speed and costs). Hopefully, with scalability upgrades, more people will become interested in playing Blockchain games, enabling virtual items to experience high demand over time.
Personally, I'm a fan of Blockchain-based gaming, but if the user base is low, it won't be going anywhere. Mainstream adoption is key here for the success of the ERC-721 concept.
I personally do not like all these game based erc tokens as i think they are the primary cause of network congestion in eth network only after eth gets rid of the scalability issues, then i will look out for games and dapps.
Yes. That's why I believe that it was a bad idea for Ethereum to allow everything to run within a single blockchain. NEO's model on the other hand, is much more flexible as it separates smart contract execution (via its own token named GAS) from ordinary transactions in the main chain. Having everything relying on the main chain, will cause a lot of bloat. Fortunately, third party projects like Loom Network and PoA have been working on sidechains that bring greater scalability for Ethereum smart contracts. The bloat would be reduced if devs would use these sidechain projects (like Plasma Chain) for their ETH-based games.
Therefore, in the future, ERC-721 may become more practical than ever with said improvements.