Use case for cETH

lets say you had 1 WBTC sitting around and you want to convert(mint) it to cWBTC2 on compound.

So you see that gas fees are insane, but since you are converting to a ctoken, giving you borrowing power, it would be smart to borrow ETH with your borrowing power.

Since COMP borrow APY for ETH is more than ETH borrow APY it makes sense to borrow ETH, especially since it pays for itself.

So in one tx, you deposit cWBTC, borrow eth, and this eth pays for the gas fees.

Now, what am I missing?

No one really borrows ETH on compound anyway, this would be a good use case.