[nonethewiser]

That assumes you started your mortgage in roughly the last 10-15 years in the US or somewhere else with the same rate history. Average rates before then were consistently higher. https://fred.stlouisfed.org/series/MORTGAGE30US

If you started your mortgage before then its a neutral to positive rate-wise.

[giaour]

Many holders of higher rate mortgages refinanced during the last 10-15 years, too.