yeah instances are repetitive but new content keeps that fresh (i.e AQ, burning crusade etc..)
then you have fixed place pvp for lazy ppl and honour famring and on vashj we have a healthy world pvp scene
I have been rank10 four times now, never been arsed to make HighWarlord although I seem to have increasingly more spare time with work so I might do it.
I find it a fun game to play, I have to say its not as good as UO but lets be fair UO back in the day was pretty fucking awesome, for now WoW is the best there is so I shall thank it for saving my sanity when I have fuck all else to do.
for happy feelings its awesome too, I lead a guild which was the first to down nefarion on our server, was one of the best times ever we wiped for weeks and finally got it! Yeah that might sound homogay but who cares

my wow arttifacts http://wow.allakhazam.com/profile.html?529845