This. Not even having an argument in mind, my immediate response is, "I don't know, present something to me and allow me to present something to you. Then we can both consider the other's arguments and decide with time."

And, frankly, finding someone willing to argue their point, listen to an opposing point, and agree it will take time for both parties to consider is.... rare.

Usually people asking this question are just trying to weaponize whatever you say against you. And they'll use the above response to retort that your stance doesn't matter because you're willing to admit there may be something you don't know.

And then these are the same people to turn around and say you can't base things off your own experience.

How about instead of arguing, try to agree to disagree and then have interesting discussions regarding those disagreements? Now that makes for a good hangout buddy.