Because he was an unnecessary addition to the story, completely out of character for what XF was about. The whole baby William story line changed a fantastic প্রদর্শনী into a very sappy and boring soap opera. I have nothing against the kid in general, I just hate what his story did with my favourite প্রদর্শনী :(
I don't hate Baby William. And just to let people know if আপনি were true অনুরাগী and the entire series of The X Files, he was an important key to the series especially the whole Mulder and Scully storyline. The Baby that really gets on my nerves and that i hate is Baby Christina on অস্থি that's who আপনি should hate she was unnessary to the অস্থি storyline. At least baby William had a purpose baby Christina didn't she was just an easy and lazy way to put Emily Deschanel's real preganancy in the প্রদর্শনী which was unnessary anyways because they could of at least hid her pregnancy like most shows do.