http://tvline.com/2016/03/01/the-big-bang-theory-renewed-season-10-cbs/

“I think it’s a given that we want to be here,” says Kaley Cuoco. "That’s the overall consensus. It might be a sticky road, but if I have anything to do with it, we’d be here for much longer. That’s the goal.”

Well as a fan of the show I don't really want to see it go. On the other hand with Baby Wolowitz now I am thinking they are running out of ideas. 10 seasons sounds like a good way to end the series.

I'm thinking the series is still going strong. My guess is there will be a season 11 at least.
The pregnancy is simply a natural progression.

I hope the show boldly keeps going; a challenge for everyone on both sides of the camera to keep the viewers wanting to view. Also, that old "Well, it ain't rocket science." line - TBBT has all kinds of science (including rocket science). Not a whole lot of that on TV. Oh, and a plethora of purty good guest stars..sorry, Bob..the very best guest stars.

It's Ok by me. I'm not paying them those huge salaries though.

When kids enter the picture it's time to call it a day. The best series finale this show could have had was the birth of a child, but we don't need to actually see the kid as it grows up. The fun is gone with kids in the picture.