Change the world in some as-yet undiscovered way? I have much less than 1% confidence that any of the crypto ideas I've heard so far will change the world.
My wife and I paid off our student loan debts with a 0% interest loan and no need to go through a bank. Our position is well over-collateralized and interest generated from other DeFi lending positions will pay off the loan in full.
Not to mention, Ethereum as a settlement layer for stablecoins is gaining exponential adoption. There's a non-insignificant chance it disrupts the traditional banking rails (i.e. ACH, wire, SWIFT, etc.).
I didn't go into detail in the initial post since it sounds a bit crazy, but the loan will actually pay itself off since Alchemix is depositing my $30k into Yearn. The yields generated from Yearn gradually pay down my debt automatically. Other interest bearing positions (apps like Compound and "yield farming" on various new protocols) will also help me pay off the loan faster.
The alternative to this is that I could've taken $15k from the initial $30k and paid off our loans outright. But, using Alchemix is more capital efficient. Student debts are now paid and I also have $30k of capital generating yield instead of only $15k if I had simply paid the loans upfront.
Also, this was not my scenario but a common view: it can make sense to draw a loan so that you're not liquidating long-term holdings. Imagine I hold $100k in bitcoin and need to pay off $15k in student debt. If I sell my BTC, I'll incur capital gains tax and also have a smaller long-term holding. Alternatively, I can borrow $15k against the BTC, pay no tax, and keep my BTC position in full. There are various ways to then generate interest on the BTC and pay back the borrowed funds.
Some platforms offering 0% loans include Liquity and Alchemix.
In fact this “DeFi” thing should have a negative interest rate to compensate for the fact that this borrower will be paying them more and more each payment.
What happened is that you used DeFi to leverage your financial position, not pay off debts.
Don't lie to people.
https://news.ycombinator.com/item?id=27845492
And I'm not increasing my overall debt position on my personal balance sheet. Rather, I shifted the debt from student loans at ~5.5% to a DeFi protocol where the borrow rate is effectively negative.
If so, that doesn't seem that groundbreaking. You could have simply liquidated enough of your gains to pay your student loans off. Instead, you're now in a leveraged position. It's very possible that your collateral could drop below the LTV threshold, causing a liquidation, which would magnify the losses you'd have if you weren't levered. There's no free lunch.
It's certainly interesting that DeFi creates new schemes for creating leverage, with minimal intermediation, but I wouldn't call it groundbreaking. It's an incremental development in financial engineering.
EDIT: read some of your other comments that you made while I was writing mine. It sounds like you're using stablecoins as your collateral, which seems like a smart move, and you've effectively converted your student loan into a DeFi loan at a lower rate. But I'd still be concerned that while your more mundane risks aren't that high (like asset prices and interest rates), you may have exposure to more complex risks.
I'm not saying this isn't innovative, but I still stand by the opinion that this is more incremental than revolutionary.
Building these options is alot of fun and very lucrative
And yes, there are definitely risks; it's not for everyone!