All these examples are simply meant to show the complexity of human attraction and romantic bonding and that things are rarely "black and white" even when we think we have the full right to "judge" or declare that "we are right/good people and they are wrong/bad people".
We can go ahead and judge some or all of these non-monogamous behaviors, but perhaps it is monogamy itself that should be "judged". I am not advocating for either pro- or anti-monogamy, simply trying to provide some food for thought

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And in fact, one school of thought in the field of evolutionary biology hypothesizes that, despite modern cliche romantic comedies in which the woman dreams of marriage all her life, "marriage" may have come about not because women wanted to be assured of their partner's faithfulness, but because it was the
men who wanted to be sure their children were really theirs so they used "marriage" to accomplish this (along with controlling women's lives and denying them the freedoms that men enjoyed).
I leave you with the following article presenting the "facts". (Especially if you've always wondered why you look nothing like your father)