Curious writer is curious

One of the interesting things about writing in a large-ish universe for, oh, a quarter-century, is that you're pretty often meeting people who have read your work (or, even more interestingly, haven't read your work), and who have formed opinions about the plot-line, the characters, the theme, the authors' childhoods, and adult proclivities. .
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That being so, and because  people will say things either to me or within my hearing, I find myself with a question, which I will now throw out to you, the readers of the Liaden Universe®:

What is, in your opinion, the Big Story (also known as the Real Story) of the Liaden Universe® novels?

There are no right answers, or wrong answers.  Curious author is, as advertised above, curious.