Yes.
But, it depends on what you're looking for in an MMO. I have 4 level 80 characters and have dabbled in some of the PVP stuff.
What do you want to know that you don't already?
Do you usually play PvE or do you do a lot of single PVP or team PVP? Do you like dungeons? What other MMOs have you played? Do you expect there to be an end-game similar to WoW?
The one thing GW2 does different than other MMOs is lets you play PvE by yourself, but makes it not boring/grinding or makes you feel that you're alone. A lot of the game is based around dynamic leveling up or down. I can explain more if needed. But, if you're playing PvE by yourself you aren't going to be going from NPC to NPC doing mindless objectives. Most of the "missions" in the game have you completing tasks passively with other players around you.