I do feel for you but i was in a similar situation when i first got pregnant. I realised after my son was bron that my OH was just not going to be the hands on typr. It does upset me a little when i see other dads so close to their children. My OH supports us well financially and i have never had to work, unless i have wanted too, but it is a shame. Now the children are older he enjoys their company much more and has no choice but to be involved as they are there and children can be very frank and cunning about the attention they want.
Just stick with it, i don't know how old your OH is but sometimes older men can find it hare to adjust when they are set in their ways. I think for my OH it was fear, he had never been around babes and really didn't have a clue. When he did change a nappy (about 5 times all told) he managed everytime to put it on backwards! I love my kids and they are my life i have a moan every now and again about his ack of involvement but i would'nt change it for the world!