I'm in the same boat here bro. My son is almost four now. After my son was born it seemed like I had that post pardom depression that my wife was supposed to have. I was depressed all the time, like I was in the box. My Doc put me on Paxil and my life is gradually changing. This may not be your answer but its what kept me true to my wife and a father to my son. You have to be happy within yourself before you can be happy. Do a little searching bro and see just what it is that makes you happy. Look at it this way......some people cannot find love, some people cannot have children......take a look around my friend it could be a lot worse. You may be feeling sorry for yourself? Thats ok, just look at how fortunate you are and maybe you'll see that things are different that they really are? If you are feeling more depressed then you are letting on, and you are thinking of suicide or something like that, then pm me and lets see if I can get you some real help. Good Luck bro!
Arias