Why does my hubby think work & his likings are more important than his family?

I have been married for 7 years and have 2 beautiful baby girls with my husband. He seems to think that work and the things he likes to do are more important. Hes never home when he does have a day off (which is rare) there is always something that comes up for him to do. I know for a fact hes not cheating so get that out of your minds but it just feels like hed rather be doing something else then spending time with his family. He doesn't help me at all with the girls and when I try & explain to him that you can't have a family & not spend ANY time with them he just gets pissy. Even his boy pointed out that hes never home & doesn't know how I do it alone. I feel like I'm a single mother and live off of child support. Thats about the only thing he does is bring home the money. I can't raise these 2 kids by myself. I feel like I'm the little house wife who takes care of everything. I got married because I was in love & I wouldn't be alone now I'm alone with 2 kids. What do I do? Please help.