I will say this, from my past experiences, however limited they may be, it's good when a story idea is in your consciousness, because that's when it really starts to develop and hopefully take on a life of it's own. Literally grow in an organic sense of the word. Whether or not anything comes of it, or for that matter, if it's any good, is besides the point, because long before you ever get to the point where you've earned the right to indulge in such solipsistic behavior, you've got to first start writing the damn thing. And the first step towards that goal is to drudge it up from the soil of your fertile mind.
Assuming, of course, that there is some hint of fertility in there. Not always the case.
Thanks for reading.