re: If Breaking Bad is so good, why only 5 seasons?

Its not really a show that you can build on just to make more seasons. It plays more like a movie where everything has meaning, a cause and effect. From the very beginning, everything was connected and because of that you know that it will never last (if you watch it, you will know I mean by this). Not every show has the luxury of randomly starting new storylines that have no connection to past or future seasons.