Money is not dirty, but money corrupts everything it touches [1]. Doesn't matter if that's healthcare, internet, art or computer games, having money as a part of equation twists incentives and changes the overall picture into a darker one. It is (obviously) necessary for survival, and so it's not bad per se, but there's nothing wrong with longing for money-less interaction.

[1] To be fair, my belief in this may also come from the Christian background of Europe.