I'm sure we've all gotten into heated debates with an individual (or two or a dozen), knowing full well we had little to no chance of changing minds during the debate. Everybody in that sorry situation is left extremely frustrated at the whole pointless exercise.
Before entering into another argumentative exercise in futility, remember the words of wisdom from Proverbs 20:3:
"It is honorable to refrain from strife, but every fool is quick to quarrel."
If we're wise, that single verse will save us many hours and much aggravation.
Have a blessed day ... and drop by on Sunday for an hour's worship and more inspiration. We'll keep a pew open for you.