Why would a woman leave a hard working husband & take the kids to away from him to "Find Herself"?

"Find Herself" what does that mean? Doesn't the guy do enough for her, working, & letting her live comfortably? What else could possibly want to find & why leave a working man to live on welfare as a single mom?
Why would a woman leave a hard working husband & take the kids to away from him to "Find Herself"?
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