The two seat ensures you and your love one can go out without having to drag the kids with you.
Also look at the 550, again two seats but the rear has been finished far nicer than the Strad...maybe an aftermarket trimmer could build a nice carbon and leather shelf for the rear???
Yep the 550 is finished beautifully in the back with leather and straps for luggage IIRC. Saw a red one last week, with it's four seater sister it's still the only Ferrari I really like (don't do mid engined cars).