Good points! I agree that good parenting is harder, as you don't have an equal in the other person. They depend on you to carry more of the R weight. Whereas the adult partner is expected to carry more, so if things are going well, you have less to do.
My goodbyes from S6 are much more painful as well, telling me that my love for him is very deep. Maybe not deeper than my love for XW, and perhaps of a different nature.
