Refactoring happens when you don't get it right the first time, though, and that tends to happen often even with planning; so it's still a useful and necessary

Refactoring happens when you don't get it right the first time, though, and that tends to happen often even with planning; so it's still a useful and necessary process. You are correct about emphasizing more planning up front, of course. If anything deserves bowing at an altar, it's designing before you write code.