There are times to be righteously angry about things, but life is too short and precious to waste carrying a grudge. Resolve your grievances if you can and move on -- including the ones others may have with you.
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Regrets can last forever -- so be careful about irreversible acts.
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Regardless of how we wish things were, sex usually has consequences, and notions of "equality" are not really possible with it.
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An ounce of prevention is worth a pound of cure -- and the ounce of prevention may appear inconvenient at the time, but it's alway worth "going back for".
Kev