Rehab might actually be worth considering.
If only for this day in day out madness to stop for a while.
From a distance it looks like in some small way you actually crave this drama. I'm sure I'm wrong, but this is why I think that you have had some stick.
I know you are concerned about how the court will look upon you going into rehab, and it is a good idea to check that out. My gut feel is that they may think that you are addressing the issues that have caused the change in residency arrangements.
For me, if I were looking at this as if it were my life, I'd be thinking STOP THE WORLD, I WANNA GET OFF.
I think you need to look at areas of your life that you can exert some control on and make changes.
Stop Dating. You have a loser magnet in your pants at the moment. It's not helping. being alone is better than putting up with this shit. You need time to reflect, time for you.
FB: if you can't kick the habit altogether, which is what I would suggest, you need to have mass cull. Delete all those that don't add to your life. Be ruthless. You need support now, not detraction.
Find out what it is that you need to do to get your DC back with you. Find out what you need to do to ensure that they will be better off with you than with your ExH. By this I don't mean pack at his flaws, I mean RAISE YOUR GAME, be a better person, improve yourself.
Super, I know you have been given a hard time on here, and some may have been overly cruel, but you are very often your own worst enemy, you do seem unwittingly sabotaging your own life. Starting threads attacking those who have given you a hard time raises your head above the parapets to those that haven't commented before, I know why you do it, I know you feel embittered, under fire, and persecuted, but that is a component of everything else, and is the main driving force to the downward spiral/self destruct mode you seem to be in at the moment.
We none of us want to see another one of us suffering, but you are not being your own best friend at the moment, and when people say to you to try x and y and z and you don't or ignore or attack them for suggesting it, you know some of us will call you on it.
If rehab is an escape from your reality and enables you a clean, safe space for you to deconstruct your life and put it back together, you may benefit from it.
Otherwise, perhaps we ought to suggest you go give GentleOtter a hand on her remote scottish farm with tons and tons of snow, snowed in for 10days so far and no sign of that changing for a while, no water, and feeling rather panicky..