A couple of points here:
Also, agriculture, therefore farmer, was much more likely to be the acceptable occupation, because nobody was being a soldier on an empty stomach. Carpenters, tailors, ship builders…there were ALL kinds of occupations…Soldiers and sailors were also, but not the main occupations as stated.
“To compare the 400 years or so of the crusades with modern savages is a grotesque comparison. To say that they are on equal terms is being deliberately blind.” I believe you are absolutely wrong on this. At the time, the Crusaders were “modern savages”…just more organized and better financed.