An opponent s attack should never go un-countered. So, this question has a different specific answer for each Judoka trying to answer it. For me, all effort ended in Uchimata, Ippon Seoinage, Subamigaishi, Tegaruma and a few others. Judo has a great deal to teach about life and has great transfer value for the young. It can help a lot of kids get on and stay on the right track.
Mass participation is beneficial to the individuals and the sport as a whole.
The more people practicing the better. So increased participation must be organized Judo s primary goal. Seek out better and better judoka to work with and learn from. Pay attention to the coaching and take what you need from it. Develop your own style.