Sorry, totally lost me on this part. From the little bits and pieces I've seen of it, it seems to be nearly as stupid and weird a show as Modern Family, which is complete garbage, non-funny, and simply awful.
I use to think the same thing, then, my wife made me watch it.
Big Bang is as close to a perfect sitcom that has been out since Drew Carry. Unfortunately, it seems to be undergoing a metamorphosis and becoming more drama than comedy. Kind of like MASH.
I know people just like the folks on the show. I find it rather realistic. It helps that there is a live studio audience of students from Cal-Tech in. They get the science.
Bob Newhart was a running guest on the show. I started watching it because I saw him on one episode as I was flipping the channels, so I figured it must not be all that bad. I heard later that he was a big fan of the show.