the interest rates are completely fair: would you rather A) keep $100k in fiat and earn 13% B) keep 1 BTC thats the free market rate -- no one who understands bitcoin wants to settle for 9% or 7%...or whatver you think is a "fair" rate. Don't borrow against more than 5% of your stack. The less bitcoin I sell, the less I pay in taxes. Yes the loan is only 12 months, but just take out a new loan to pay the old...I would rather a longer term, but you can just turn it into a rolling loan. I generally use 50% of the loan to pay for big ticket things (recently a propeller) and the remaining 50% to buy more bitcoin. If you don't understand how to use it, don't. If love the optionality @jack mallers has given us!