To begin with, some families can't afford to pay for elderly care. To illustrate, the demand for elderly care services has been increased with a growing number of aged people. The increase for the demand raises cost and thus some families with poverty can'tcannot pay expensive care for their old parents. Therefore, it is evident that the government should help those people to pay for the care.
However, they might have difficulty paying these as they don'tdo not have family to financially support them
In academic writing, you should not use abbreviations like "can't, don't" but write "cannot, do not" instead.
When they become too old to care for
themselves
Hope this helps :)