In situations like yours, it's very easy for the wife to get stuck in the mother role. Making love with the husband becomes irrelevant. Being attractive becomes less important.
You don't know how many of my friends tell me that after their child was born, they stopped having date nights with their spouses. They stopped really being a couple. They became parents -- and that was it. But parents need to also be lovers.
I endorse what Cinco said: "Get a baby sitter once in a while and rediscover each other (grandma & grandpa are good for this). You can't do anything better for your new child than to raise him/her in a home with two loving and still in love parents (and that means regular lovers)."
This is incredibly important. Are you and your wife still going on date nights? Do you have a baby sitter? If the answer is no ... that's all you need to know.
Yes, maybe the most important thing you can do for your child is to work on being a good couple who really enjoy spending time together.
I know it's tough. But this is essential to your happiness and the future welfare of your family.
me: 50 w (waw): 45 daughter: 9 m: 16 t: 19 bomb: 9/26/08 status: physical separation for 7 weeks, then work-in-progress R