If you understand and play the game, it is actually exciting to watch.
Kinda like baseball and other sports. We play them a lot as a kid, we learn the rules and we learn how to differentiate the best players and the best plays from the rest of the lot and we enjoy watching it. Why not with video games?
Everyone READING this has a "life." Might want to define what you mean. Also why don't you list all your hobbies and let the rest of the world judge you with their own personal ideals and culture driven "norms." Sound fun?