There is a lot of fraud in SSDI as well. The problem is that this is provided by the government. People with disabilities should be cared for by their families and communities. This also helps to remove fraud as it is much harder to deceive your family and friends than it is the government. This is how it has been done for thousands of years and it worked great. If your family and community don't want to provide for you, then that probably means you don't need it.