Are you FUC'KING kidding!?! :banghead:
That's the dumbest thing I have ever heard.
Sir, read your own sentence and you will have another eureka moment in the dumbest thing you have ever "heard"!!!
Let me see, defining a virus, something that is installed on your computer against your will, collects data on you, pops up ads and [censored].
Steam client, something that I am forced to install against my will if I want to play this game, collects data from my computer, pops up ads and [censored]...
I see very little difference there, have you considered that lack of imagination has caused your lack of "hearing"?..