Like virtually all sci-fi the book is a metaphor for our condition and likely future/end should we continue as we are. In this case the coddled consumer vs the self-sustaining.
It reminds me of many sayings: The hard way is the easy way...it begins as a blessing, but ends as a curse, making life easy, but making it worse...a velvet lined golden cage...all one can hope for in life is hard, challenging, rewarding work.
The book addresses the fallacy of the allure of the easy life (driven by the growth economy/consumer paradigm)....and the healthy need for balance as a path to enjoyment as basic philosophy to live by. Parts of the book are fantastical - until juxtaposed with things like AI (worm holes/mass accelerators etc) - which the book addressees far before it became an issue like good sci-fi does - truly visionary and prophetic. It moves very fast as does most "juvenile literature" and would make great movie with the right director.