What is your Main Reason(s) to Open Steam Account?

Because I had to install Steam in order to play Half Life 2 when it was first released.

My original reason to create a Steam account was to activate the games from the first Humble Bundle.

I'm glad that I did create my account because I've amassed a very nice collection of games in the 3+ years that I've used Steam.

To active Counter-Strike:Source , 5 years ago

was told to play Killing Floor by a friend then used it alot after being succesfully brainwashed by the steamnews after closing any game.

Team fortress back in March 2010.

when cs 1.5 left the won servers and steam was created and 1.6 was released

Modern Warfare 2.

Good old Red Orchestra, back in 2006

Dayz mod was the original reason i started but didn't play it much, but civ5 was my real starting game.

I opened and account in September 2009 for God only knows what reason. As far as I know, I didn't do anything with it at the moment.
I added Dirt 3 in July of 2011, because it came with a video card, then I forgot about Steam again.
I came back and bought Duke Nukem Forever in February 2012, then I went on and bought the Humble Bundle for Android.

It all went downhill from there... and 2 years later I've become a game hoarder with over 1500 games.

That was TF2

To hoard games i'll never play.

Nah, needed it for CS and half life 2, sadly. Hated it a lot, WON ftw :p

Chat and games. 50-50.

To exploit the The Great Gift Pile on 2011 ofc.

playing games that weren't available on console, the great deals, plus mods for other games.

Linux support.

Counter-Strike.

My response is pretty common, CS 1.6. Quit after a year or so. Got back in when Humble Bundles/Steam Sales became popular (shortly after World of Warcraft died).

People I hung out with talked about steam a lot, so I decided to check it out and get one.

easy place to get games.. I don't have to search around at stores or other sites for games.

CS:S

because i want to meet russian friends

TF2