Actually you should care, for a lot of reasons. Your presumption of not caring comes from taking for granted a lot of things. One first thing that you absolutely must care is security. The world around you and your loved ones is relatively safe thanks to multitude of operating services that make sure that the individuals roaming free are not that crazy, not that malevolent, not that contagious, and in short will not have that much of a negative impact on society at large (which includes you). Achieving that is no easy task, especially when you also want such things as freedom and openness to the rest of the world. Of course, there are also a lot of other important considerations that require individual identification, and I'm sure you'll manage to understand many of them on your own.