For me it grew from a horror of the state I find myself when I just *can't* recall something I have known or have to lookup things several times. Then the satisfaction of never having that feeling again!
I'll let you decide if using anki for 6+ years and with a 1000+ days streak counts at "long". In any case it doesn't have to 100% solve my memory issues to satisfy the goal I described above, it just has to solve it enough to make me feel okay with some forgetting because I literaly couldn't try harder.
