You can be even more productive by not making any (Anti-)ToDo lists, thereby reducing management overhead and the time spent figuring out how to use, using and reviewing todo list techniques.
Lack of productivity is rarely due to lack of time. Almost always due to lack of motivation. If you can trade excess time for some motivation by playing with lists then why not?
Don't become a slave to your lists, sure, but some basic organization can go a long way to increasing your productivity as well as giving you the ability to look back and review what you did.