The notion of an enduring core self is apparently a fiction that appears to be of some usefulness of comfort to... who or what? Whatever it is that cares enough to take up this idea surely qualifies as self. If no self is the reality then it is hard to see how or why such an alien notion as selfhood could arise. If it is a fundamental antinomy of mind, then the question remains as to why just this line of cleavage, why should it matter so? Put another way, you could say that there is no phenomenon of auto-affection that is not as readily based on no-self as on self - an actual self as self-sufficient microcosm is in no way needed to ground such phenomena. A no-self may be just as selfish as any self, or more so.