It would take you...
324 continuous hours
13 days,12 hours,26 minutes
of gameplay to complete your Steam library

IN THIS TIME YOU COULD...
Watch the entire series of Friends 3 times

Fucking LOL.

Thank god I've got some steam games to play.

Throw in 16 hours of SC2 LOTV too... 

5139 continuous hours
214 days,3 hours,47 minutes
of gameplay to complete your Steam library

IN THIS TIME YOU COULD...

Travel to the moon 50 times
Watch the entire Star Trek: The Original Series 78 times
Watch the entirety of Star Trek (all TV shows and movies) 8 times
Watch the Tenth Doctor's (the best Doctor) series' 134 times
Listen to Free Bird 34,265 times
Write 7 NaNoWriMo novels


:| 

5492 continuous hours
228 days,20 hours,42 minutes
of gameplay to complete your Steam library

IN THIS TIME YOU COULD...
Climb to the top of the Empire State Building 5,492 times
Live out 3 lifespans as an ant
Watch Star Wars: A New Hope 2,723 times
Run 47,080 miles (though you might need a water break)

I don't feel good about this. 

shamblernaut
It would take you...
1564 continuous hours
65 days,4 hours,44 minutes
of gameplay to complete your Steam library

IN THIS TIME YOU COULD...

Learn Liszt's "La Campanella" (one of the hardest pieces of piano classical music) 12 times 

It would take you...
5461 continuous hours
227 days,13 hours,19 minutes
of gameplay to complete your Steam library

IN THIS TIME YOU COULD...

Travel to Mercury 1 time.