To live one's life without having known The Doctor, Dr. Who that is, would be like missing the last ten minutes of the third movie in the Lord of The Rings Trilogy, walk off home runs, three pointers at the buzzer, or any of an infinite number of inspirational moments.
Granted, I've come late to the classic BBC series, but that doesn't mean I'm not as devoted as any Dr. Who fan who came before or will come after me.
In case you've not met The Doctor, click the arrow and invest fifteen seconds of your time and you'll understand what I'm talking about.
"Listen. There is one thing you need to know about traveling with me... well, one thing apart from the blue box and the two hearts, we don't walk away."
After it's all said and done, the only legacy that matters is knowing that you never failed yourself - that you never walked away.
That's not something one can explain to another. It is only something one can live.
And, best of all, it's never to late to stop walking away.