I for one would dearly like the opportunity to NOT sit next to my DH and DD on the plane occasionally.

One fidgets the journey away and the other insists on making a thousand trips to the loo as well as making the most of the IFE... Anyone who has an empty single seat next to them is welcome to one of my two any time.....

I probably wouldn't totally enjoy the centre seats in any cabin - but hey - couple of G&Ts, eyeshades on - blanket wrapped around and snooze the trip away.... tinme passes soon enough!