Baby Boom!

Lately, it seems like someone's announcing they're pregnant or they're having a baby just about every waking minute.  I suppose I am about that age.  I get sooooooo extremely happy and giddy knowing that a new little one is on the way or was just brought into the world.  In fact, I get a little jealous.  I love to babysit, and hold them in my arms, and let them curl up on my shoulder, and touch their little soft heads. But tell me:

How does a married woman in her mid/late twenties possibly keep the decision to have a child of her own a rational decision with all the adorableness (and peer pressure) going on right now!!??