Some of what has been spoken of on the other Meta can be found in this pollthis poll, among many other posts.
I only suggest editing a title if the current title does not provide a concise point on the question. If it would be vague enough to be confusing as to what it meant, for example. But if the title is fine even if it isn't a literal question, I think it is fine to stay.
Advantages of not requiring the title to be a question:
- It may serve the secondary purpose of attracting answerers better.
- Adding interrogatives may be extraneous.
- Seeing a page filled with "How do I" at the start of every question can be annoying for a user to parse.
- Sometimes it is a lot shorter to stick with a quick statement than to formulate your question, if it is particularly complex.