Update: We asked this question almost two years ago, and it took a while for voting to produce a clear winner. We'd like to implement this answer.
As described here, I feel the current wording of one of our close reasons is misleading:
Questions asking for advice on what to do are not practical answerable questions (e.g. "what job should I take?", or "what skills should I learn?"). Questions should get answers explaining why and how to make a decision, not advice on what to do. For more information, click here.
All questions, fundamentally, are asking for "advice on what to do". The trick is in how you refine them. "Here's my tale of woe; help!" doesn't work, and broad "what would you do?" opinion surveys don't work. The key info in this close reason is in the examples -- what job to take, what skills to learn, etc -- rather than in the first phrase that people see.
I just came across a wording we used to use (found in an old, closed question):
Questions seeking advice on what job to take, what skills to learn, etc. are off-topic as the answers are rarely useful to anyone else.
That's much better. Apparently we found it too restrictive and broadened it, but I think we went too far. Can we find something in the middle?
What wording should this close reason have that is sufficiently inclusive but not too broad?
Also, bear in mind that "primarily opinion-based" is baked into SE; that option already exists.