Originally Posted by
Jibjub
If you are interested in the lore or getting Hall of Monument (HoM) points, which can give you some exclusive cosmetic perks (gear/weapon skins, pets, and titles) or reserving a two-word name (you cannot have 1-word names in GW1 but you can in GW2) then it's worth it, sure ... or if you just want to try out a new game (the gameplay is not very similar).
Also -- you can continue getting HoM points in GW1 after GW2 releases ... so it's not like you have to get all the points before Aug 28.