Good to know and thanks for the tip. This was back when I did more on a personal computer, but I remember spending hours just trying to get software to work. Again, this isn’t something I need to worry about today, but getting Octave (free version of Matlab) to work on Linux was a nightmare.
It’s risk mitigation for the banks. You don’t have to put 20% down, but generally you’ll have to pay an additional insurance (PMI) if you don’t.