Why do people (read: men, mostly) in public positions, who have so very, very much to lose, engage in extra-marital sex? Why?
Some claim it is an addiction. Addictions are choices. You have to choose to try something, and choose it over and over and over, usually, to develop an addiction to it. You picked it, with a little help from some weak gene, perhaps, but – you picked it. Still your fault.
Some claim they were seduced. Duh. Sin is attractive (read: seductive), because no one would commit it if it was ugly, obvious and UNattractive. You chose to do it. Still your fault.
Some claim it was because their significant, legal choice for legitimate sex was unforthcoming with the goods. Sounds like a relationship problem you can work out with time, therapy and some serious romancing on your part – not to mention cleaning up the ugly parts of your life and character that are turning your significant other OFF to the point that they are not interested in you even touching them. And, if all those remedies are unproductive, you can divorce them and hook up (legally) with someone more compatible with your sex drive. Still your fault.
And SOME offer no redeeming ideas at all for their stupid, childish, undisciplined, sexually risky and career-risking behavior whatsoever. STILL YOUR FAULT.