While I certainly try to encourage everyone to participate as much as they want, I'd like to provide some counterbalance to that comment:
1. It is to be expected that folks will argue in a complicated hobby with lots of different approaches when the answers are not simple facts, but rather the questions are asking for opinions.
Is this OK?
How should I ...?
Do I need to...?
Will this work?
What is the best way to...?
2. There are also actual wrong answers posted by people who think they are right. These are not typically opinion questions but are fact questions. They may think they are right for many good reasons (manufacturer claim, it worked for them, they read it elsewhere, etc.), and yet they are not. If these wrong answers are left unchallenged, others will quickly "learn" the wrong answers and quick as a whistle, the hobby has some new misinformation spreading through it. I make these sorts of challenges a lot, and I definitely understand that many folks are not happy to see such a challenge. Nevertheless, I feel it is more desirable to do, than not. I try to always make the challenge about the facts and not the person, but not everyone takes it that way, especially if they are corrected multiple times on the same subject.