> Do people just pay the principal and interest for 30 years? If interest rates go down, you refinance. If interest rates go up, you hold onto that cheap debt

> Do people just pay the principal and interest for 30 years? If interest rates go down, you refinance. If interest rates go up, you hold onto that cheap debt as long as you can. It’s a pretty unique product in that one party (the consumer) gets complete flexibility whereas the other (the bank) doesn’t