Why does creating a simple idea take so long?

Many would likely hear my music and think it simple. They are correct; it is often exceedingly simple. Much of it sounds as though it was written in only a matter of days, or even in a single sitting, as though I were writing a letter. If one were to hear my latest project, they might believe it was written in mere hours. And indeed, I sometimes hear the question, “How long did that take you?”