I don’t understand that point of view. I don’t see it as “fighting” each other at all. We are told many times in scripture to exort, rebuke, and correct.
2 Timothy 4:2 Preach the word; be instant in season, out of season; reprove, rebuke, exhort with all long suffering and doctrine.
Titus 1:13 This witness is true. Wherefore rebuke them sharply, that they may be sound in the faith; 14 Not giving heed to Jewish fables, and commandments of men, that turn from the truth.
Titus 2:15 These things speak, and exhort, and rebuke with all authority. Let no man despise thee.
People always come up with the “judge not” meme but the word used in John 7:24 is “krino” which means:
Short Definition: I judge, decide, think good
Definition: (a) I judge, whether in a law-court or privately: sometimes with cognate
nouns emphasizing the notion of the verb, (b) I decide, I think (it) good.
[http://biblesuite.com/strongs/greek/2919.htm]
I don’t see this as “fighting” at all. At least that is not the intent or attitude I have. If someone sees this as “fighting” then perhaps it is they who need to examine their own motives. And I don't say that to you personally at all but to anyone who thinks that by being involved in these discussion it's somehow fighting. I would suggest that "contend for the faith" would be a better term.
But also remember that, as Christian believers, be it Catholic or Prostestant, there is one passage of scripture that should unite us:
“One Lord, one faith, one baptism.”
Ephesians 4:6.
What I see here is attacking one Christian believer by others to try to make a point at a time when Christians are being “attacked” world-wide and must be united to be able to spread the good news of the Gospel of Jesus.
Maybe what it is coming down to is to correct in love.
If Catholics feel free to contend for their faith, they have to expect that others are going to feel the same about THEIR faith.
If you see someone following what you perceive as error that is going to lead them to harm spiritually, do warn them or not?
Which is more loving? To warn them or to let them follow their own path to their detriment?
If I saw a truck bearing down on you about to make roadkill of you, would I be more loving to grab you and pull you out of the way or tell you to get out of the way, or to not warn you because you might be *offended* by me telling or making you to do something you don’t want to do?
Besides, the problem isn’t the discussions, but the attitudes.
And the mockery and stupid cartoons.
If people stuck to the issues and quit making it personal as too often becomes, that would make a huge difference.