Why do you balk at classifying things? Do you not see the traits and methods of execution that cause things to be similar enough to be considered "in a genre"?
you can classify anything, in any way, for any reason. that's part of the fun. there are infinite categories, and you can make up the categories. and they are ever-changing. the lines will always blur, rightfully so. in fact it seems to me that it's hard to really do anything inspiring unless you are blurring someone's line, somewhere. genre naming is (and should be) way way too fluid and elastic for me to ever be able to feel comfortable with a question like 'what genre do you prefer.' to me, favorite-genre questions actually feel the same as 'what race of people do you prefer.' it just seems to crush the entire spirit of life when you look at it that way. i hope that makes sense