Why plan projects?
Planning a project gives you an accurate time and price estimate, it also gives you guidelines on what to build during development. It can cut your development time by a large amount because you won’t have to worry about bad design. Lastly, there is nothing worse for a large application’s design then having a programmer who added as he went. Planning a project will make the overall design far better

No arguing. Even small projects need planning. Even a small script.

Agree with you tony =D