The problem is not about why we would not want to relive our life, the problem is we can't. You can't even relive yesterday, where is the question of reliving your life? Life is a journey, like a river that flows, once the river flows it can never come back to the point where it was. So is life, you can't bring back yesterday that is gone. We must realize that life is about the moment, only this moment. There is no question of reliving life, whether we want to or don't want to so why think about it? Why not live life moment by moment, in bliss and peace, and the realization of who we are and why we are here.
There are many different reasons why a person may feel this way, but as you already know, there are no do overs in life. However we do have the ability to improve by learning from the past, this is part of maturing. Our brains are living and ever developing computers, putting the right information in them will help us improve our lives.
The creator of this complex computer says, at John 17:3 "This means everlasting life, taking in knowledge of God, and Jesus his son." Then we are told why that is so important in Isaiah 48:17, which says, "God is,The One teaching you to benefit yourself, The One guiding you in the way you should walk." Following this guideline
has helped me so much in the past 50 years. Also this website jw.org has helped.