Evidence based medicine. Why is evidence ignored? Your guess is as good as mine.
As far as diverticulitis is concerned there is absolutely no evidence supporting antibiotic use. But we still do it. Simple conditions require treatments. If the patient is not improving with or without antibiotics they require interventions. But we would have to inform our patients well as to why we are not giving them an antibiotic.https://first10em.com/diverticulitis-antibiotics/ 
I have just listened to the podcast on herpes zoster.
You did not mention valaciclovir (for acute management) apart from prophylactic dose.
Is it equivalent to acyclovir for acute management?
Yours sincerely,