One of the things I found, is right before my wife had our first son, people used to tell us that it is going to be soo worth it once you see the face of the baby.
I won't lie...it was SOOO anti-climatic for me. I didn't feel all bubbly inside when he was born, and I kinda felt bad because I thought that I might be horrible for not feeling all 'father-y'. I am not sure if this is something that happens to everybody, but it did to me.
The first three months were tough. Physically and mentally. Your wife is going through some more serious body changes (i.e. healing from bringing another human into the world), and the human you guys brought in is reliant on you for - literally - everything.
It can be psychologically draining and physically taxing. You get little sleep, no matter how much you try to sleep while the baby sleeps.
However, just remember that the first few months are the roughest....it usually gets better from there on.
My son is now 2.5 years old and I can't believe where the time has gone.
I ask him to say 'hippopotamus' and he says 'ip-oh-pon-oh-mus'. Just for that little moment alone, everything I have been through for the last 2.5 years, all the medical bills, all the midnight rushing to the ER, all diaper changes, everything is worth it.
Typically, once the baby starts responding to you, guys tend to prefer that stage. It is SOOO worth it...so just hang in there, and like ezmobius said - do what your wife wants (although you will be exhausted as hell you never went through what she went through, so no bitching) and do it with a smile. She will appreciate it. If she appreciates it, you will too :)
P.S. I have since deactivated my data plan on my bb, because when I was with my son, I realized I wasn't really 'with him'. I was always checking my mail or responding to bbm. It's good to be away from the computer when you are away from the computer.
P.P.S Oh...my wife is about to give birth to our second (a girl this time), so I was writing this as much for myself as it was for you. Just to remind myself what I went through and preparing myself for what is ahead. Once the 3 - 6 months pass, you forget it. So it's important to try to take a walk down memory lane.