Ok, il play your side. 
Many men are not cut out to deal with crying, dirty and hungry children. You obviously are one of these guys, it does not necessarily mean you're a bad father. Its very normal, its the world that has gone mad! Since when does a real man change a diaper?!
Of course you are miserable. In some families, the mother must stay home and single handedly manage the children and the father must man up, go out and bring back the cash. He only touches happy, clean children and even that only on the weekends.
Actually to give some background, my wife is in school day and night so I am Tatty, Mommy, full time earner, diaper changer, morning clothes dresser, breakfast feeder, brown bag luncher, (for Mommy too) ponytail-maker, supper cooker, bather, pajama dresser, tantrum consoler, bedtime story teller, full time house keeper, laundry do-er, (night Seder chavrusa), among others.
;-)