I hate when babies are introduced into series, mid series.
For example, you're really invested in all that's going on in these characters lives, and then lo-and-behold one of them falls pregnant. ****.
They have the baby at let's say end of season 2 in a show spanning seven seasons, so from seasons 3-7 the characters are held back from previous daring story lines (in context of their lives) because of this ******* character that you are never going to get to know because it's a baby and all it will do for it's existence on the show is cry, sleep and be in the back of the minds of a their parent who now has this shitty and boring priority to take care of.