B.H.
My daughter's dad was alot like that. My daughter was a planned pregnancy yet when I became pregnant he changed big time, selfish, abusive etc...
My daughter was in the special care nurserey at Children's in Mpls., for two weeks after birth for being a preemie, me just having a c-section couldn't drive and we would fight over it because he wouldn't feel like driving me to go see our precious new baby, then he became really bad and got kicked to the curb when my daughter was about a month old. He's my ex for a reason now. He had visitation and pretended to want to be in my daughter's life and put a good show on for everyone until reality hit when my daughter was 4 and he finally gave up the phoney act and now hasn't seen her in 2 years.
My advise is, you can't change anyone. You can sit around and wait a lifetime hoping they'll change, hoping they want to be involved and want to be with you but you can't make them. I've accepted my life as it is, although I NEVER ever imagined being a single parent but here it is and I do the best job I can. I can't worry about him, I have to worry about my daughter and she takes up so much time and energy there's nothing left in me to sit and worry about his sorry butt.
If he's not involved and not truely happy and enthusiastic about parenting or being a husband he's probaly not wanting to be with you guys anymore but feel stuck so stays around.
Don't waste your time with him, if he's not contributing why keep him around?
I'm not trying to be harsh or anything I feel for you and if you ever want to talk I'm here on my computer just don't settle for less is all I'm saying. Give 'em a chance and if he doesn't try you have to make your own decisions stay with him and be miserable or move on in your life without him.