From reading other LBS's posts over the years, I have come to believe that almost every person undergoing a mid life crisis is abusive to his or her spouse in some form or another - generally emotional and verbal, especially during the Anger Stage.
While I agree with reiterating that verbal and physical abuse is unacceptable (as posted by MWD in her blog http://www.divorcebusting.com/blog/) I also believe advising every person whose spouse is abusive in some way NOT to DB would be a great disservice.
My MLC ex was occasionally extremely verbally abusive and struck me once during the 5 years I stood for my marriage. DBing helped me to set boundaries and get stronger. DBing did not save my marriage but it saved me.
Linda
Me 65, Ex 64 M 38 y 2 adult S, 4 G-Kids MLC 11/07 BD 12/09 D 3/14 Dating nice guy 7/14 Engaged to nice guy 12/17