This game is fast-paced, unique, challenging and incredibly rewarding, because even after hundreds of hours of playtime, you still make progress and learn new things. No two matches are alike, and - if you're willing to spend the initial time required to get familiar with the concept - you'll find yourself playing a game that's balanced, and where teamwork is the winning factor in your play.
If you're the person that likes games where strategy matters and teamplay & communication are more valuable than just individual skill, this is for you.
If you're the person that likes a mature community and player base (...we all know there are exceptions everywhere) where you actually talk to the opposing team after the match is over, complimenting them on their play and/or discussing the previous round, this is definitely for you.
However: If you're the solo-rambo kind of guy who likes to be on top of the score list and not be dependent on anything or anyone: Don't buy this. You will not like this.