Speaking for NL, yes it's mortgages. And those come with monthly payments towards the principal in pretty much all cases. Also, those being mortgages the rates are like 5% or so, not over 20%. Soll
After 30 years, people generally speaking own their home and that's their biggest chunk of wealth. So basically, yes a high debt to income ratio, but it's building towards wealth and its not high interest debt either.