I have 2 kids now, and the first 3 months of a kids life really suck. Maybe not 3, but at least 2. All they do is eat, sleep, piss, shit & cry. Your entire job as a parent is just to keep them alive, and that's it. It wouldn't bother me at all if I missed 100% of those first 2 months. Kids start to develop a personality around 3 months, though. The switch in their head turns on. Suddenly they go from slabs of meat that complain all the time into real people with personalities. That's when the fun begins.
EDIT: Also, each kid has its own differences. My daughter loved sitting in a rocking crib thing that vibrates. She would happily sit there all day, as long as we rocked her (or a Fisher Price swing). My son, on the other hand, wants to be held. Not just held, though. He screams if we only hold him. Instead, he wants to be held and walked around. It's a real pain in the ass. I can't really accomplish anything around him, because he only wants to be held while walking. It's nice when he sleeps because we get some peace at that point, but he doesn't sleep nearly enough. And he doesn't sleep "deeply" at all. He's a cat napper that is very adamant about if he's not sleeping, neither are you.
Aside from that, there's baby puking (spitting up). My daughter only ever spit up maybe 2-3 times total in her young life. This doesn't include real vomit when she was on solid food, but actual breast milk spitting up. She had a great stomach (still does, except scallops are her kryptonite).
Then there's the boy. He spits up 3-4 times every fucking day. We go through tons of towels cleaning it all off. A few onesies when we don't notice it quick enough (he spits up in his sleep). He's a fucking monster. I can't wait for this stage to end.
On the up side, he screams, but not with a lot of volume. He's maybe only around 60% of the sound level that my daughter used to be. Her scream was extremely high-pitched also. It would physically hurt my ears. He cries hard, but not loud. It's much more bearable. So that's a bonus.
