Additional information:
ColeValleyGirl pointed out in a comment that subjective StackOverflow questions were moved to Programmers. If you take a look at the Programmers FAQ, it gives quite clear rules for subjective questions that I think are very reasonable. This is what it says:
What about subjective questions?
Subjective questions are allowed, but subjective does not mean
“anything goes”. Please keep it professional at all times. If this is
a question you'd be uncomfortable discussing with your colleagues in a
work environment, it's probably not appropriate here, either.
All subjective questions are expected to be constructive. How do we
define that? Constructive subjective questions …
- inspire answers that explain “why” and “how”.
- tend to have long, not short, answers.
- have a constructive, fair, and impartial tone.
- invite sharing experiences over opinions.
- insist that opinion be backed up with facts and references.
- are more than just mindless social fun.
Questions that do not meet enough of these six guidelines will be
closed as "Not Constructive". Please see the Good Subjective, Bad Subjective
and Real Questions Have Answers blog posts for more details
and examples.
Maybe we should adopt something like this for Genealogy and Family History SE when we finalize our FAQ.