There are plenty of dumb things about this show, but that is pretty true with any TV show. The whole idea of a T-888 being able to contain a marriage for years and have a functioning social life felt far fetched to me. Maybe if they had had the Terminator have a conversation with his wife it might have felt more natural, but the only thing we ever here him say to her are one liners, "that's not a good idea" "just finish it", also when we see the Terminator before he gets killed, he acts very Terminator like. I just have a hard time swallowing that episode. I really liked the very last episode though.
As with all new shows, they usually take a little while to find their groove, and unfortunately T:SCC was cut four episodes short by the writers strike. It took until about the fifth episode for this thing to start getting decent to me, the first four episodes just didn't have much going for them. Hopefully if we get a second season then we will really see this take off.