Amen, dmc. Welcome a789. Your post was so thought-provoking
I've had lots of time to think about all this, and I can't truly say that having a child with autism ruined my marriage; my ex's self-centeredness, jealousy, and emotional immaturity ruined our marriage. (I had a role too, of course, but where our disabled child is concernedit was all him)
The silver lining is that my daughter has helped me define my requirements for Mr. Right-for-Me and raised the bar; selfish, judgemental, immaturemen need not apply!
Like you, dmc, I acknowledge my desire for a relationship. The corollary to that is knowing the wrong man will just turn my world upside down and I don't need any more work. He'll come along!