GEN594 The society in Noah’s generation was acting both on its rampant lust and its great desire for goods, which eventually doomed it.  Because that society was lawless, there was no need tohide their greed or stealing the way it is done today.  Rather, they openly took anything they wanted.  (Rashi).  According to Rabbi Shlomo Ephraim Luntschitz (1550-1619), it was their constant greed for more and more to satiate their endless desires that made this generation evil.  Kli Ykar commentary on Genesis 6:5.  In the end, despite the myriad other sins that this generation committed, God decided to destroy the entire world only because of the sin of greed.  Rashi, Sanhedrin 108a.  AMJV 337