Anonymous wrote:People with good, excellent to ordinary relationships with their parents grieve their whole lives. I don't really understand the question.
No they don’t, unless you have some other definition of “grieve” in mind that isn’t the normal one. In that case you are just changing the question to “what is the definition of grieving”. My dad died 7 years ago from cancer. I was very sad for a few days / weeks, and then occasionally sad for a longer, maybe a few months. Now 7 years later sure I miss my dad from time to time but most of the time when I think of him the memories are happy, about things we did, and the good times we had.