Me and some friends are interessed in playing it.
They all said it was good, but I want other people opinion.

LMK

Not as populated as WoW, down to 4 servers, couple hundred thousand players. You still see zergs of 100+ rolling around in open rvr though. There's a free trial with unlimited play (cant go beyond 10, and some features restricted. Not much risk to trying the game either, paying for the first month gives you a game account (don't have to purchase anything). If you're looking to play order, let me know - on the Badlands server.

Has the game totally died, as of now?

Not really, during the week its soso, but weekends are highly populated