There is good subjective and bad subjective
We are not a science site so not answers don't need to cite sources. studies may request answers to cite sources but that's pretty much where the citing ends.
Opinion =/= Subjective
The close reason primarily-opinion-based doesn't discriminate all subjective questions. Key word: primary.
Some examples of opinion-based questions are:
- What is the best language to learn?
- Why does English suck so much for learners?
(these are exaggerated examples)
As you can see all these answers are opinion based. If I give you an answer, it will be what I think is the best answer.
Attempts to cover up opinion-based questions
If I change the question to:
- According to scientific research, what is the best language?
Well... that can be considered objective but the question is truly opinion based and this is really just a cover-up. What is "scientific research? A poll?
These are especially bad for the site's health as they result in unanswered questions (because chances are the study has not been done), and low quality content.
What's wrong with opinion based?
Stack Exchange is a Q&A forums, for answers not opinions. Opinion-based questions bring forth low-quality content such as "Why is English the worst language?".
What's good subjective?
As I said earlier, the only very objective questions are probably going to be going to be studies. Good subjective isn't opinion based, meaning answers aren't simply a binary preference and bias is minimal. Examples are:
these are both subjective, as their is no cut and dry "way" to do, but they are the good type of subjective.
If you have disagreements or questions about what I said please leave a comment or ping me (@Downgoat) in chat