There is an assurance that comes from the comfort of knowing that you are truly His. When you have a relationship you know is secure, it makes that relationship more stable, IMO. One isn't always worried that the other is not pleased with them (which wouldn't seem to be a good foundation for a relationship). Some take this too far and find, beyond comfort, complacency.
I agree with what you say mostly. Except
It didn't really answer the question of focus on "assurance of my personal eternal salvation".
I think there is also a difference on how we, you and I, approach this relationship aspect with God, "whether He is pleased with us" for example.
thanks again for your reply, I always appreciate them.