While I admit, as a man, I do strongly desire to feel needed (something I never felt in my marriage up until very recently). That being said, that is absolutely NO excuse, whatsoever, to have an affair. If you don't feel you are needed then grow a pair of balls, man up, and tell your wife how you feel. A real man doesn't sneak off with another woman to feel needed. Sorry if that's harsh, and maybe I'm old-fashioned, but that's just what I believe.
That being said, I can say that, personally, I would feel as though my spouse wasn't that committed to our M if she constantly threw out divorce during arguments (I'm guessing the arguments aren't about the A, but, say, about making the car payment, for example). I would feel that she was only with me out of pity or boredom or any other non-romantic, committed reasons. I would honestly recommend NOT making threats you don't intent to backup with actions. It is incredibly confusing for men, and we are confused enough as it is..!
In addition, I would be very displeased if my wife didn't wear her wedding ring, and she would be rightfully displeased if I didn't wear my wedding band. When I see married people not wearing those, I automatically assume they don't want to be labeled as unavailable. Sorry, but that's just the truth, and most people I know feel the same way. You putting on your wedding ring signifies your commitment to your husband (and his to you, when he wears his). My WW always wore her wedding ring (except when she was with her AP. Then, she had the foresight to at least remove it and look available, I guess?).
I understand you have been hurt and abused in your past marriage, but you do have to see that your husband is NOT your ex-husband, as hard as it may be to make transition, mentally, you really need to do that in order to build a closer relationship with him, build intimacy, etc.
Keep up the good work. Keep fighting for what you want. That doesn't mean you don't get to be an independent woman, but your independence should foster a CLOSER relationship with your husband, not the other way around.