Sixteen years in the history of the universe are nothing—a mere blip in time, barely noticeable, and fairly insignificant.
Sixteen years in the lives of two people are just the opposite, constituting a significant portion of those lives no matter how old the individuals.
Sixteen years of personal history are marked with a whole range of life experience: pain, struggle, frustration, doubt, joy, happiness, contentment, passion, and much more.
Sixteen years in the lives of two people are a long time. And it has all been worth it.