The cost of living is primarily based on rent first - then housing.
Landlords have a criteria.
Therefore, referring to the table of family rental income and home owner family income, we see the average operation range. When money is borrowed for an RSP, interest is paid with after tax dollars. Income earned in an RSP consists of interest, capital gains and dividends. Capital gains and dividends are treated as income when they are sold. Therefore, whatever is saved in the form of taxes when you buy an RSP, is lost when the RSP is sold.