Jim, where do you currently stand with the separation legally? Meaning, are you and W officially separated? How long has this been going on?
The reason for suggesting to file for D is to protect yourself financially. I do worry that W is taking you for a ride that is harmful to you. As you know by now, I am not for advocating in filing for a D unless it is an ABSOLUTELY necessary step. In your case, I think it has reached the threshold.
You must look out for #1 which is you. No one else is doing that.