Sure, they're cute. But they cry...and they get sick. My friend had to cancel a brunch on me this weekend because her baby was not feeling well. "The baby just puked everywhere", she texted, "so I don't think we can meet up tomorrow morning". Bugger.
Then again, babies can also be the perfect alibi when you can't be f^&ked. No one ever questions the credibility of the parent if they use their baby as an excuse. "Sorry, cant make it. The baby is sick" or "Sorry, cant make it. The baby is sleeping" is much more believable than "Sorry, cant make it. I'm sick" or "Sorry, can't make it. I'm sleeping".