I don't understand the proposition that if you don't like ballads you don't like folksong. Ballads are part of folksong, but even if you generally like ballads (as I do), there are likely to be some you dislike (child 95: The Maid freed from the gallows -- an exercise in dullness to me!) or can't be bothered with (the whole child section of Robin Hood ballads, for example.)

Nor do I get the business of the expected ending: I think it pretty clear how a lot of songs not classed as ballads are going to end, and irrespective of that, most people enjoy hearing songs they have heard many times and certainly know the ending to - to reference an example above: "The Nutting Girl" for some people.

How and why we like the music and songs we do, and why we don't like others, is rather mysterious, but I am always wary when people dislike a whole category, irrespective of what it is: ballads, sci fi, white wine, classical music …   It make life simpler perhaps, but I think most people will find things they like (and dislike!) in all such categories if they are open minded.