Because he is hedonistic, he spent all his time on his hobbies and did not work.
He practices hedonism. He devoted all his time to his hobbies and did no work.
ご質問ありがとうございます。
① "Because he is hedonistic,"＝「彼は快楽主義者なので、」
"he spent all his time on his hobbies and did not work."＝「彼は趣味に全ての時間を費やし、働かなかった。」
② "He practices hedonism."＝「彼は快楽主義である。」
"He devoted all his time to his hobbies and did no work."＝「彼は自分の全ての時間を趣味に与え、仕事をしなかった。」
ご参考になると幸いです。
アメリカ合衆国 
