Why are we consuming so much sugar despite knowing too much can harm us?

Avena, N. M., Potenza, M. N., & Gold, M. S. (2015). Why are we consuming so much sugar despite knowing too much can harm us? JAMA internal medicine, 175(1), 145—146. https://doi.org/10.1001/jamainternmed.2014.6968

Avena article is a review