Why do you think that by 1204 the crusades had lost some of their appeal?

By 1204, the Crusades had lost some of their appeal due to a combination of factors, including the failure to achieve their primary goals, such as the recapture of Jerusalem, and the increasing disillusionment with the violence and corruption associated with the campaigns. Additionally, the diversion of the Fourth Crusade to Constantinople in 1204, which led to the sack of the city and deepened divisions between Eastern and Western Christianity, further alienated potential supporters. Economic strains and a growing skepticism about the motivations behind the Crusades also contributed to their declining popularity among European Christians.