So basically the real you will died, but a copy of your conscious will be place into a new body of your choosing.
I'm gonna try to live it out, until I die of natural causes. After that I can go adventuring with this option. One reason why I might use this ability early, is that if someone I love has a rare genetic disease that threaten their life. I could then use this machine to make a new body that has a cure for that genetic disease, and give the cure to them.