The toughest part here, to me, is the fact that he is 28.
If he were 10 years younger... maybe a bit more maturity would help (some kids make major gains as they near their mid-20s). But at 28, he is a WYSIWYG - what you see is what you get. Either HE finds a way to get decent employment and get on with life, or HE accepts that he has a disability and gets help. He does not have the right to hold you hostage forever. Even the most disabled kids turn into adults and need to leave home at some point and be cared for in "the system" because eventually their parents will not be there to look after them.
