I will answer in terms of Indiana law, which may differ from the laws in your state:
Each person in a marriage is allowed to have items in his name. I know of no requirement that a spouse be on the deed to the home, the title to the car, etc.
He can go out tomorrow and buy a house and leave you out of the transaction entirely, if he wants.
Now, in the event of a divorce, the fact that those items are in his name won't matter. What matters is whether they were acquired during the marriage. If they were, they're almost always considered part of the marital pot and would need to be divided equitably in a divorce.
If he thinks that having something in his name alone, if acquired during the marriage, offers him some sort of financial protection, he is sadly mistaken (and maybe a jerk to boot).
Hope this helps address your questions.