What are the major criticisms of the section 8 housing program?

The major criticisms of section 8 housing is usually the type of people, especially those other than disabled or elderly participants, that participate in the program. Most notably, single mothers with children are criticized because of the way their children behave - often unsupervised - and because they allow their boyfriends or other people, who are not documented into the program, often a convicted felon, to reside with them undetected. Undeniably, virtually everyone in the program is on a low income, which qualifies them for the program.