Finality :)
Do you mean explore your past lives to know why you have the relationships you have in this life?
I have thought about this a lot.
On one hand we might imagine that we could have better understanding of our current life and our relationships with others. And hope that in doing so we could "fix" things or change the present for the better.
But on the other this might just add to the drama and not help at all.
Now I think past life regression would be interesting if it would help you to remember previously known talents and skills.
I also would not mind knowing why I love certain things and historical eras and places.
I love history in general. Past life regression would have great entertainment value for me :)
Suzette