That definition of vice is so broad as to be useless. Literally any human activity could be a dependency economically, physically, mentally. Also, sports can ea

That definition of vice is so broad as to be useless. Literally any human activity could be a dependency economically, physically, mentally. Also, sports can easily be something "to manage something suboptimal", e.g. I'm sad because I have no friends therefore I'm going to join a soccer league. And now that I mention it, you've gone and created a dependency on soccer for your meeting new friends. People take drugs sometimes just for fun like any other activity and aren't trying to manage every tiny bit of their life min/maxing, optimizing every activity. Moralizing "drug" use in the way you suggest is pointlessly minimizing and judgemental.