Every writer finds inspiration in some some sort of real event or memory. It is the nature of the beast.
That is not to say that we use our lives in totality and turn every single aspect into a plot point or scene in one of our books.
No, not at all.
But, we need reference points, or at least, most of do. We do not all write about our lives and entangle it in our works. Though, I would be hard-pressed to say that I do not include tidbits of my world in my novels.