I don't try to keep my crosshair on a target. Sort of habitually aim towards the center of the screen (Took me a while to notice there was no crosshair in AQ2). If I'm using a railgun, however, I consciously force myself to use the crosshair to point and click.
But yes, I use a crosshair, and yes, I voted =)
And you need to vote too, Raz =)