Originally Posted by M.N. Dalvez
I don't think it is a rule; it's more about the concept of elegance. Using italicisation, parentheses, semi-colons, and so on excessively just isn't elegant, man.
Yeah, I use 'man' a lot, too. 'Dude' as well. It's a fair cop. I have caught grief over it, but I grew up in the 1970s, man. It's hard-wired.
Question: When should one use " " vs. ' '?