Rank is nice as it is something to strive for and adds another element to the game. Do I worry about it? Not so much.... (though I've yet to be demoted... except for when the new ranks were added that is.

) I'm honestly more interested in my win/loss percentage. I think that's a nice indicator of ability (with a little luck or lack thereof mixed in with it.) and find myself keeping more of an eye on that rather than my "stripes".
As far as whether or not ranks matter to me as far as opponents go - I tend to start my games so I take on all-comers (though the higher ranked folks usually play a more interesting game I must say).
All in all rank is a good thing but it does'nt keep me up at night.
