raise family
settle down
commitment
reserve
security
eg：mortage payment can be less than rent.
the hardest part about buying is saving initial deposit.
therefore people buy to rent which means that they buy the house,decorate them in hopes they can
attracts tenants who want to rent  the apartment and live there.
the rent at least the amount of the mortage.
some landlord also set rents a little higher  in order to have some excess cash to pay for any damages,
wear and tear,or breakages.