Music touches our hearts. That simple. And, surprisingly to me, there are those for whom that doesn't apply.
Sophistication? A Mahler symphony is surely more sophisticated than a simple Appalachian folk song. It takes a great deal more sophistication, if not patience, to get through a Mahler symphony than a folk song.
But we should not confuse sophistication with quality. Shelby Flint's, The Ash Grove is a pure and beautiful song accompanied by only guitar. It touches the heart. How can it be more qualitative than a complex symphony?
We shouldn't confuse complexity and a masterly grasp of compositional techniques with quality.
Now, getting down to personal likes, that is very subjective, based on one's background, personal tastes, etc. I personally like, among others, advanced avant guarde music. My background gives me the tools to comprehend and get pleasure out of it. But my mother told me that my favourite song as a child, one that would compel me to go running to the radio, was Hank Thompson's Little Red Wagon. Different strokes and so forth. . .