This is a discussion forum, and for you to understand why a person says what they say, you have to understand that person's perspective. It is only after you've seen things from his point of view that you can know how skewed their point is and how to correct such a person. It is also only when you can learn from a person. Keep in mind that we live in different realities, and my experiences may be different from yours, so the way I view things may be different from yours, but at the core, humanity should prevail.
Now and then, I see people being rude or condescending to other users, mostly in a subtle manner, but it shouldn't be like that. Except that the person is being a jerk or just inhumane, there's no need for that.

When we see something, we should try to critically analyse that thing properly before making judgments.
For example, a person can say something like "taxes are too expensive" and another user might just dive in and disagree, failing to realise that we come from different parts of the world and how things are in one country or city may be different from the other. Therefore, our views will be different, and that is fine because that is how we can grow or get better.