Should men have back up women?

Because all levels of women are usually pursued (below average, average, above, cute, pretty, beautiful) thanks to fetishes, social media and how easy accessible sex is at any time for them not to mention how women can monkey branch in relationships and act on hypergamy (men in commitments might still be secretly competing with other men without even knowing it, with her work husband, guy friends, etc).. Because of all of this not to mention that women cheat just as much as men they are just way better at not getting caught.. should men of all success levels have back up women? Women seem to have back up men, or plans in place..

Should men have back up women?
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