In 2005 when my mother's health was failing from a brain tumor, I had signed up for a BOM at my LQS. Sewing those blocks when she was doing poorly helped keep my sanity. In 2007 when my company was going through a REALLY BAD transisiton, the Sales manager, also good friend, was "let go". In the situation we were in, we found out 6 months later that the boss had stage 4 cancer, but it was so chaotic and his personality changed and he was becoming a tyrant. The day he fired her I went to my LQS and just walked around looking and calming my self down. She had done everything he asked, and as soon as she did, he was telling her NO, I want it done this way."
So yes, at my machine or not, I do use it as therapy!
Happy Quilting, Susan