Behind The Code ep. #14 - So why are actually computers all about zeros and ones?

1001101...When people see this most of them are like - "Yeah, that's computer stuff". But they doesn't actually give it a second thought and ask why is it actually computer stuff. Why cannot computers count the way we people do. They're much better in counting in general. Make less mistakes and are much faster. They should be able to understand more than 2 digits huh?