I'm a man and I still use "just" because even if a man doesn't use it I see them as aggressive and dickish. I feel it's just more polite to use it.
General rules:
Exceptions may be made at the discretion of the mods.
I'm a man and I still use "just" because even if a man doesn't use it I see them as aggressive and dickish. I feel it's just more polite to use it.