Most useless part is priorities on personal list. If something like utility invoice is to be paid - just do it.
If it is something like "read Anna Karenina" it is not getting any priority ever it is just something I would like to do in my life.
So stuff that really needs to be done I will deal with without any todo list I will just remember it or deal with it right away.
Stuff that does not need to be done will not get done - and that is perfectly fine.
Different thing is if it is company "todo" list and I need to keep customer requests, well JIRA does the job.
In the end don't listen to me because there are many much more successful people than me, I am simply happy with what I achieved so far, maybe I would achieve more with todo lists but somehow I fail to see how these would help me in living my life.