Were the Crusades motivated by greed?

Were the Crusades motivated by greed? Get my book about the Crusades: =sr_1_1?ie=UTF8&qid=1461105827&sr=8-1&keywords=why does the heathen rage Support my work on Patreon: Get the music used in this video: Donate through PayPal: An examination of motivation during the Crusades. What most motivated crusading? Power? Wealth? Faith? Brotherly love? Or something else...