When was a prefix word Sir started to use & why do we need to say that ?

[Vistabel]

why do we need to say Sir, Mister instead to constitute equality?

[Lorenzo]

To confer respect and humility. We refer this prefix to give honor to the person being addressed, by his works, his achievements, and or some sort of personal obeisance. Filipinos, who uphold the notion of filial piety, are not wronged in this regard.

It is in our culture, and our mentality; we are a respectful people and culture.

[islander]

i no understood question & prefix not sir no need to say.