That said one does the same things as in other MMOs; dungeons, open world events, crafting, achievement collecting, "quests" in the for of the personal story [sorta like tor's class story], et cetera.
I have been in World vs. World twice since release. Not even once in SPVP. Rarely PVP'd in GW1 as well. But loved the game to pieces at times.
There is plenty to entertain myself with for casual play in the GW series.
Guild Wars 2's price point and "value" [though this as a concept is to be admonished] is no greater or worse than a good single player RPG such as The Witcher or Fallout.
There is no sub. So even if you get 90hours of solid RPG out of it for $30 it is on par with the previously mentioned.