Prodigal -
What was he worth when you married him? You are certainly entitled to at least half of what has accumulated since you got married. Did he own the home before you married him? Since it is just in his name I am assuming that he owned it prior or you would have dower rights in most states. Make a list of questions and call a divorce attorney - they don't charge for the initial consultation in most cases.
You will feel soooo much better when you know how the finances would be handled. I am glad to see that you are making a plan. When the time comes it will help you to leave with a plan in place.
Hugs, Jo