> What do people gain by arguing over these? Genuinely confused
If you assume some arguments (eventually, in some way) lead to people altering their opinions closer to the truth, then people gain more accurate views of the world. This also reduces the spread of misinformation (when the people who have corrected their views no longer spread it), thus having a compounding effect on more people getting closer to the truth.
Or if you assume people never change their opinions as the result of arguments, then I suppose people gain nothing by arguing.
If you assume some arguments (eventually, in some way) lead to people altering their opinions closer to the truth, then people gain more accurate views of the world. This also reduces the spread of misinformation (when the people who have corrected their views no longer spread it), thus having a compounding effect on more people getting closer to the truth.
Or if you assume people never change their opinions as the result of arguments, then I suppose people gain nothing by arguing.