Enjoying L4D2?

I bought the game about a year ago and made a guide series about it in my channel TheGamingOnion,
Now that most of you got the game for absolutely nothing here's a question, How is the game? do you think it's worth the 20 dollars you should have spent a long time ago? Or was it a waste of time? Let the discussion commence!

I do hope valve never does this again to anything though, because this just results in their games getting hacked, and the last thing I want to see is a game like l4d2 getting hacked, even though you might not understand my reasoning behind this.

Anyways, cheers! And a happy new year.

WELLL..
I would of bought it if i had friends that actually LIKE the game.
I personally enjoy it yes .
I think its fun , enterntaining, AND ALSO HILARIOUS.
The jockeys jumping on peoples backs? How funny is that >.<
Anyway yes i think i should of bought it a long time ago ^^

Absolutely enjoying it. Got it for free on steam sale. Perfect game to have fun with friends