Depends on my mood. I like a little kibitz in a friendly game. Sometimes I just want to concentrate on the game and my opponent might as well be a computer.
I don't think it's rude to not chat, and sometimes I think some people chat to deliberately distract so they can win easier.
perhaps you are coming to this site to be a social butterfly (which is fine and respectable too) but if you are playing a game perhaps you should just concentrate n the game...most people that come to chess.com come to play chess and dont want to be bothered. Is also called respecting your opponent?
Not to mention that telling an opponent something along the lines of, "hi" or "good luck" for me kills my desire to beat my opponent at all costs. Whether it be a massacre, a slow ground out game, a lucky save, or a win on time. I know they are human beings, but I don't want to associate the moves I see on my computer screen with a living, breathing, feeling human being. If I am playing in an OTB tournament, a shake of hands is all that's required. We can go over the game afterwards too, but until then, they're my enemy. I have friends in the real world. I don't need any on the internet.
Completely agree with you....