I think Clarisse, even for the short time that she was in the novel, grew to be one of my favorite characters. I liked her because she is so similar to what I feel most teenagers are. It is a common misconception these days that all teenagers do is party, text, and watch tv. While these are things that teens enjoy, our lives are not consumed by them. Like Clarisse, many people my age enjoy hiking, nature, literature, and things that do not involve technology in the least. I think Ray Bradbury may have been thinking the way about the future generations as adults currently think of adolescents. I feel F451 is more of an entertaining story than an accurate depiction of life in the future as seen by people in the 1950's.
The end of the novel was a perfect end to the story. When Granger says 'welcome back to life' it ends the book in the best way possible. In saying this, he is addressing the rebirth of Montag. A new life that has been given to him. A life that can be lived in any way Montag desires.