It is, quite simply, the longest-running scripted primetime series in history. To put together a "complete series" is to hold a mirror to 36 years of human civilization. Let’s address the elephant in the room—or rather, the elephant with four fingers and a donut. When fans talk about buying the complete series, they are usually chasing the dragon of Seasons 3 through 8 (often called the "Golden Age").
D’oh!
Homer, Marge, Bart, Lisa, and Maggie have been 34, 34, 10, 8, and 1 for 36 years. They have outlasted presidents, wars, and the collapse of the media that birthed them. the simpsons complete series