The main theme of the book is about war and 'Billy Pigrims' experience of this. I think it goes much deeper than this looking at an alternative meaning to 'life and death'. Whether we do actually die or live our same life over several times. Or whether Billy was truly insane or in fact experiencing all his time traveling. But then again I do tend to read more into things.. sometimes!
One of the most censored books of the past 25 years - variously accused of being obscene, vulgar, violent, inappropriate, cruel, and unpatriotic. Or could this really just be a funny story of innocence faced with apocalypse? What do you think? https://www.goodreads.com/book/show/108978.Slaughterhouse_Five