Atheism and the meaning of life - what drives you?

[Spongebob]

Happens to me all the time. And I like it when that happens. Because it's a learning opportunity.

Precisely.  I suppose one could say that learning is a large part of what makes life meaningful to me.  See how I brought it back on topic?

In fact, my first post to this forum was about an autobiographical book/film that was receiving negative reviews and I failed to understand where the criticism was coming from, so I asked an open question on the forum if anyone had any perspective on that.  I hadn't intended to join a new atheist forum because I had participated on one for over a decade before it collapsed and decided it was too much of a time sink anyway, but I did want some honest opinions about this book.  I simply could not rest until I understand the opposing perspective on the book.