As to motivations for murder

[Irish_Dem]

3. Identifying motive is part of the legal process.

It helps strengthen the case in court, answers the question about why the crime was committed.
And gives the judge some idea about mental status and proper punishment.

For example the psychologists doing the evaluations on this guy are going to ask for
his motives for committing the murder. The answer will give them important information
about the shooter. Whether he is not guilty by reason of insanity (NGRI) or does not fit
the criteria.

If he was psychotic at the time of murder or not.

Helps the judge determine how to proceed with the case.

The public also likes information about motive to help resolve their feelings about the case.
It is part of human coping strategies, to find the black box with answers.