No that's not how many people play. Many of us literally like to play and "pretend" to be the United States and base alot of our choices from laws, civics, policies, what civs we're facing on the map, etc, on which civ we're leading. I have never picked a civilization/leader specifically for its abilities or bonuses (outside of like maybe Venice in Civ V and that was simply to try out its very unique playstyle once) and while I can beat higher level difficulties, I generally don't play to min-max