Just my two cents - Anet promised a lot of things for GW2, but failed to deliver them. The world doesn't feel alive, there are like 3 types of dynamic events - kill, collect or escort, most of the times you don't even know why are you killing centaurs or escorting something because you joined the event midway through. The story wasn't something to brag about either and spamming same old 5 weapon skills got boring after like level 10. Same goes for WvW, whoever had the bigger zerg usually won.
Still it is a nice theme park MMO with active combat and you should give it a try. Just don't expect seeing hundreds of other players. Outside of WvW it felt like there are 10-20 other players in the zone you're in (maybe things have changed sine launch of HoT).