What is the meaning of life in this book? Is it valued ?

In Fahrenhet 451, life is clearly not valued as the whole social order is predicated around the idea of control of the citizens' thoughts, including a practical restriction on independent thought. Life, in this society, is centered around mindless entertainment, mind-numbing drugs, and senseless violence.

The main source of entertainment in the homes, at least in Montag's home, are the televised and interactive parlor walls. Throughout the novel, that is where Montag's wife, Mildred,...

In Fahrenhet 451, life is clearly not valued as the whole social order is predicated around the idea of control of the citizens' thoughts, including a practical restriction on independent thought. Life, in this society, is centered around mindless entertainment, mind-numbing drugs, and senseless violence.

The main source of entertainment in the homes, at least in Montag's home, are the televised and interactive parlor walls. Throughout the novel, that is where Montag's wife, Mildred, spends her time. She begs Montag for a fourth wall, which symbolically and literally, would separate her from the rest of the world except for those on the other ends of those walls. In fact, Mildred tells Montag that the fourth wall would make it so "this room wasn't ours at all, but all kinds of exotic people's rooms."

Mildred's actions explain how the people in this society use drugs to numb their minds. In the first chapter, when Montag enters the house after his initial conversation with Clarisse, he finds Mildred on the floor and her bottle of pills empty. The men who come in to remove the drugs from Mildred's system explain how these overdoses aren't unusual, but that they "get these cases nine or ten a night." In fact, someone built special machines to pump drugs out of peoples' systems after an overdose. Mildred, despite Montag explaining to her what happened, denies taking so many pills. Later in the novel, she nearly overdoses on pills again.

Finally, the cars driving 100 miles per hour and trying to run over people at random indicate how invaluable human life has become. Clarisse is the first to mention the cars and how people drive so fast that they wouldn't recognize anything, such as grass or flowers, unless they were blurs. She also explains that she left school because she didn't fit in and that her peers just wanted to "go out in the cars and race on the streets, trying to see how close you can get to lamp-posts, playing 'chicken' and 'knock hub-caps.'" She goes on to say that, in addition to the six friends who suffered gun shots, ten died in car wrecks. Later, Montag finds out Clarisse is dead after being hit by a car. At the end of the novel, Montag almost dies when a car tries to run him down.

Overall, human life is not valued in Fahrenheit 451. The sole purpose of human existance is not to procreate or to reach one's full potential, but it's to remain numb to the outside and to the decisions the controlling government is making.