I bought this game on its release and played it for about 2 weeks then quit; it sucked. No NPCs, crappy quests, clunky leveling system, no way to eat/drink/cure myself of rads or heal, etc. Even played the game with a friend, and we both hated it.
Two years later, I decided to pick it up again, and its awesome. Everything I would want in a Multiplayer Fallout Game. With each update it becomes even better - it also has something for everyone. Want PVP? Check. Want PVE? Check. Hours of main quests and side quests? Got it. Want to just build and customize a camp? You can do this too.