If you have no more ideas to put on it, then it's ok to just delete it then. If I were you, next time, if you have an idea going on in your mind, try to finish it first. I mean, put a nice beginning, a climax, then an ending. If you already have those in your head, put it on the site step by step. Making it more beautiful than to how you have imagined it. :)) Along the way, you'll have better ideas to be placed on it. :))