"Convenient" doesn't even begin to describe human flourishing. I'm surprised that you'd resort to such a strawman characterization of such a fundamental human goal. Do you really put the kind of human life that only an individual-rights based civilization can provide on the same trivial level as "convenience"???
I never said convenient describes human "flourishing." You want society to be structured in the way that most allows you to "flourish." (And why wouldn't you, if "flourishing" is your goal in life.) Isn't such a societal structure therefore the most convenient for you?