No one ever wants to write a business plan for their new business or new business venture. Most people feel that a business plan is especially needed when you want to raise startup capital, which while true, a business plan helps you create focus.
Many business owners have great ideas that they feel they can accomplish without writing the ideas down on paper. I started my first business in 1994 with just vague ideas and didn't write my first plan until 2 years later after suffering several slow starts.