Family Guy is really set in Hell! Specifically one of the Hells in the Culture novel "Surface Detail". The television programme "American Dad!" is also set in one of these Hells, but different to the one Family Guy is set in. Think about it. The characters never age and most would end up institutionalised if they lived in a normal society. It also, perhaps, makes sense that the creators of these Hells would consider early twentieth century North America, Earth, a suitable place to set these Hells. In Surface Detail the Hells are terrible places where the downloaded personalities of the dead are maintained. It's denizens are routinely raped by demons (one of whom may be Glen Quagmire ) or forced into arbitrary wars. All rapes result in pregnancy (Hell is a pretty horrible place of course), which is reminiscent of certain Family Guy episodes where unexpected or bizarre pregnancies occur.