Because I'm officially amped for the start of the F1 season.
Because the rule changes are insanity.

And since I lost my favorite F1 team (Super Aguri then Honda) twice in the same friggin' year, I may as well be down with Red Bull this season. I'm a sucker for cross branding, and now that I'm driving a Nissan again, the Renault motor is an added bonus (with slightly twisted logic, but whatever)