I have been playing MMORPG's for 25 years and can say with confidence GW2 is easily one of the best (#2 in my Top 5). GW2 and my #1 choice are the only two MMO's where I consider myself "a lifer". Why? Because there is so much to do from level 1 through and past max level, horizontal progression reduces the stress and makes all content more meaningful, and ultimately everything there is to do is just so well done and FUN to play.