Some people hate to plan for fear of failure.
If you have a plan you know where you are going. A bad plan is better than nothing as it will lead you to a better plan.
If you have a plan, you have a benchmark for your actions. Constant review and feedback will ensure you control events and measure against pre determined factors.
You may even decide to change a good plan into an even better one,
The worst plan is no plan at all, you will just drift.......