If you are going to have a discussion, the focus should be on the content. Unfortunately far too many people today use an ad hominem reply. That is to say, they attack the character of the person rather than try to understand or discuss the other person’s point of view.
Unfortunately this is a weak debating tool or tactic. It may be effective in the immediate term but it rarely advances any cause.
When someone uses an ad hominem reply, I tend to think less of that person. I will also give extra weight to the other person’s perspective. By sticking to the detail of the discussion point, the focused debater sounds more intelligent and becomes more persuasive.
Not everyone sees it that way.
Sometimes people will ‘pile on’ and cheer the negative personal attacks. They may even add their own insult or character challenge.
One may feel better in the moment for attacking someone this way but it is not helping to further discussions. Be mindful not to fall into this trap.
You are better than this.
If you do not agree with someone’s opinion, you can try to understand it by asking curious questions, not sarcastic ones. You can also simply let them have their opinion. Finally, you could politely explain why you hold a different opinion and then leave it there.