Often when that decision is made it is taken away from the user. For example when "There are decent sounding arguments for both" it is often exactly the right c

Often when that decision is made it is taken away from the user. For example when "There are decent sounding arguments for both" it is often exactly the right choice to leave the option available if it doesn't come at too much cost. Often used ones aside options are generally so hidden away anyway and thus the choice of a sensible or popular default can be made regardless without complicating the main UX.