These are mostly financial apps. Compound for example provides the ability to earn decent interest rates (currently ~2-6%) in a time of 0.1% at banks. That's definitely important for people taking it seriously and using it to grow real savings. It's not a joke or a toy, it's used for real investments.
Lightning is helping Bitcoin become more usable. dYdX, uniswap, and dai are important infrastructure for the crypto economy. Cryptokitties is a game that is not important but is popular. Augur gives insight about the future.
Right now best examples are mostly NFT games like Axie Infinity and NBA Top Shot. DeFi arguably qualifies... Decentralized replacements for many siren server offerings will likely be developed over the next decade, no harm in getting started now.
These are mostly financial apps. Compound for example provides the ability to earn decent interest rates (currently ~2-6%) in a time of 0.1% at banks. That's definitely important for people taking it seriously and using it to grow real savings. It's not a joke or a toy, it's used for real investments.
Lightning is helping Bitcoin become more usable. dYdX, uniswap, and dai are important infrastructure for the crypto economy. Cryptokitties is a game that is not important but is popular. Augur gives insight about the future.