Europe alot is cheaper than Israel
And its not only the plane ticket, Hotels in Jerusalem are insanely high. In most of Europe (except maybe LOndon and Paris) you can eassily get decent hotel room for $100 or less.
Not to dimish Isael, I want to go again, but the price scared me away. but there really is to do more in Europe, dont forget its alot bigger.
Kosher food can be a problem in Europe no doubt, especually Spain. In London Paris, Rome, Venice , Vienna, Budapest and Prague it wasnt difficult alot from jews go there