Why I don't write

I've thought about writing novels, and every once in awhile I'll get on a kick and write quite a bit. My problem is plot...I don't have one. I do great with characters, dialogue, etc., but it never really goes anywhere. I have a hundred and one interesting ideas, but I can never come up with a good story to string them all together. The difference between a pile of pearls and a necklace is the string, and no one wears a pile of pearls.