And I don't see what is illogical about a statement that says cheating on one's spouse is not an uncommon occurance and that everyone that cheats on their spouse should not automatically be assumed to be a murderer.
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The problem I have is that you termed it a standard(as a custom, as a norm) spouses who cheat as a custom commit murder. I did not imply that custom as a standard. You did.. it's certainly false. If you implied that "all" married persons who cheat murder than that is illogical
Obviously, normally people who want to be free of their spouses customarily get divorced. However, that is not always the case. I think Scott's own motivations are just that "not" the norm. That's why he's on trial for his life..
Scott wanted to be free and single. If he became a father, and got a divorce, he would have to pay alimony and child support. Since he was already in a poor financial situation that would have put a severe crimp in his lifestyle.