[GoblinSlayer]

> It may be viewed as similar to asking why there is something rather than nothing.

The answer to that is a description how something happened to exist. A possible difference is that "how" asks for a full description, while "why" asks for an abbreviated description only of the relevant part, the rest assumed to be irrelevant. Experience of time a good example, because it happens differently depending on nature of time, so you can't assume nature of time to be irrelevant to the question.

[tooheavy]

It's more appropriate to ask you 'why' you do what you do, than 'how'.

[GoblinSlayer]

Describing a cause of my actions tell how I ended up doing it. It's synonymous.