Ask HN: Why post titles are created as a question?

I'm aware I just did the same thing, but this is an example of what I'm about to explain. I would like to argue the reason articles have titles usually in the form of a question is mainly because of the laziness of the author. I want HN's feedback on this hence me posting this here.

If you think about it there is no reason for a title of an article to be a question. A question is typically directed toward a person who can answer that question. If a question is asked without the expectation of an answer why is it in the form of a question? (I just did that here by the way.) To raise curiosity could be one reason, but there is no one having a dialog so it seems wrong to me that a question is asked when in fact an assertion should be made.

Part of the reason I believe for why this is happening is because it may be fashionable to pose a question instead of making an assertion because it's indicative of not making assumptions and having an open mind. However, articles do make assumptions constantly and are in fact loaded with biases both unintentionally and on purpose. They try to persuade us by highlighting the information that is supportive of their final conclusion and omitting others that are not so much.

Finally the reasons may not be so nefarious as the picture I painted above, but perhaps at best just laziness.

Please let me know if this is what you think too or why I'm making a mistake.