Is arguing and coming to conclusion is better, or ignoring the conversations is the new normal?

Every now and then we (close friends) start some discussion on some topic, then we put our sides, but unfortunately, this conversation takes a path towards argument, where both the sides want to prove that they are correct. This is forcing me to not to start any type of conversation among us in future because I don't want to hamper my peace of mind. What should be the right suggestion over here? Shall we dig deeper into the conversations more and more, and until the conclusion does not comes up, just don't stop. Or, just tell your friend that you are right, and try to wrap the conversation over there itself. Or is there any other good way to reaching out to a pleasant end?