You can't regret what you don't decide - Sick Puppies, "There's No Going Back"
Can't regret my past life because in large part I made no decisions. By my own doing I did not have an active role in where my life went and so I cannot regret where I have arrived at. I can regret being numb and largely sleeping or reacting my way through life but what occurred and where it placed me is simply what it is.