Actually I was also like Navl_027 before who repeatedly call anyone Sir/Ma'am, but someone scared me that I can get Negative Trust for calling anyone Sir or Ma'am 
Still quite alarming though a little bit unreasonable
. Ok I get it! From now on I will now quit using sir/ma'am when addressing to someone. Thanks for the tip.Same, when I notice that it's not quite good to use Sir/ma'am calling someone in here, I change it. There are many ways of addressing people in different countries, so let's be more formal and think a right term for them. Sometimes it's unreasonable but you must learn how to fit and interact with others in a community.
I called you sir because I only want to show respect especially to a high-ranked member like you, that's all.
Sometimes when I'm addressing someone, I use mr/mrs or using @username. It doesn't mean you call them by their username, you don't respect them.