My husband seems not interested or am i just stupid is this normal life?

I'm not an expert or anything, but either he's going through some kind of crisis, or he's cheating. Which ever it is, you shouldn't blame yourself for what is happening. Right now he's being a total jerk, so I think you need to show him that you are serious, you want him to be more active in your life, and the kids. Take a small vacation(to a beach your parent's house, a hotel) with your children, just you and them. Leave your husband at home to think about what its like not having your around, and to fix whatever is going on with him.I think its the best solution since he won't talk about it.