"It doesn't alter the fact that many of you seem to think that 1) the OP just doesn't want to work, 2) that the OP is capable of performing work after providing round-the-clock care regardless of whether it's at home or outside the home (again how many of you have provided round-the-clock care?)"
Yes I am one of those who feels that the OP is making excuses and does not want to work. My ex husband and I worked opposite shifts. I worked 7 pm to 7 am 4 nights a week and 11pm to 7 am one night a week. He worked 8-5. When I got home, I didnt get to go to sleep right away, I had children at home to take care of... I learned to make do with the little naps that I could take while they were napping...
Her response to Nightowlrn about "not understanding it" leads me to believe that she doesnt want to understand it. It is simple, you do what you have to provide for your children... and disabled or not if that means getting a job then do it...

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Be careful what you wish for.....