Is assuming intent in a question useful?

Many times, it seems that threads can be derailed a bit when people start getting into a discussion about what a question “implies” or what the answer the OP wanted was when they asked a question.

Although there may be a benefit to including this in a discussion, is there a benefit to assuming anything when you start answering the question? Is there a benefit in demanding the OP explain their opinion, or what answer that they’re trying to get at?

Just in case – I don’t think so. My opinion is that when the OP states their opinion, it can limit the discussion so information pertinent to the OP perhaps changing or developing his or her opinion will be lost. ;-)