Inky,
I'm a father of 2, a 2 and 5 year old and I missed the 1st steps due to work. You will miss some of the 1st but it's nothing to be upset about. There are so many 1st that you will experience over the next year that will make you forget about this. Just love your child and spend as much time with him/her as you can.

I'm just getting out of a very low episode, so I know how you feel right now. Just think about the baby and you will get through it all. My kids are what keeps me here.