Why are people that are now sixty years old still being able to qualify for section?

Why are people that are in their sixty's still being able to qualify for section 8 when they've been on it since mid 1970? I know of someone that their goal is to loose their section 8, according to her you can never be denied section 8. Meaning that although they are on welfare they have no desire to excel, they can sell drugs, prosititute because if they have no income the state pays for it, and maybe they only pay $12.00 - $200.00 for example and the state pays the remainder. We are doing the people a great injustice when we enable them to be dependent. Dianne