Best use-cases of Ethereum

What does Ethereum enable that wasn't previously possible?

easy to create new tradeable assets: stablecoins, NFTs

This seems like the biggest one right now

collateral backed loans (AAVE)

AFAICT, this is mostly useful for avoiding capital gains tax. Without capital gains, you could just liquidate your collateral.

prediction markets like augur/polymarket

I'm a big fan of these, but I'm not convinced that crypto / decentralization provides a real benefit here. Currently, the main benefit is avoiding gambling regulations. But if regulators wanted to crack down, they could.

What else?

I'm especially interested in use-cases that would be compelling to someone who's not interested in trading and speculation.