Great questions! I'm not sure interest is immoral really. I just think it make more sense for it to be low. In the specific instance of a first time home buy

Great questions! I'm not sure interest is immoral really. I just think it make more sense for it to be low. In the specific instance of a first time home buyer, this person is typically young and has a lot of earning ahead of them. They can get a lower rate because the banker is thinking more like a VC now and will issue a low interest rate loan to bet that this person will have a significant amount of cash go through their account over the next 80 years that will add up to a nice profit for the banker. The banker's interest in the well being of the person also extends far beyond the repayment of the principle. Win-win for everyone other than the vampire bankers out there.