I would say that people who are doing 100% financing are generally speculating on their own homes. They are planning on moving within a couple years. You can get a much better interest rate by having at least 20% down. What kind of return do you need elsewhere else in order to make a 100% deal pay? Someone previously calculated 10% or more.
It’s interesting how so many real estate professionals are speculating while they are telling clients to buy for the long term.