We Have Years To Converse With Someone,

In Suspense Novels Even Subplots About Relationships Have To Have Conflict.

Certainly Going Back To Sherlock Holmes We Have A Tradition Of Forensic Science Featured In Detective Stories.

If You Have A Craftsman's Command Of The Language And Basic Writing Techniques You'll Be Able To Write - As Long As You Know What You Want To Say

In General, I Think, Less Is More, And That If A Reader Stops Reading Because A Book Is Too Icky Then I've Failed In My Obligation To The Readers.

Of Course, All Writers Draw Upon Their Personal Experiences In Describing Day-to-day Life And Human Relationships, But I Tend To Keep My Own Experiences Largely Separate From My Stories.