Earlier quoted context omitted.
As a data point, I haven't pirated a game since Steam came out.
Out of interest, why do you think that is? Is it due to convenience , availability of cheap games in sales , extra features in steam or did a rise in your disposable income just happen to coincide with the launch of steam? For me it was mainly 2 and 4.
"Games I haven't played since I bought them in a steam sale"
Maybe if I was a student again...