Originally Posted by goliath

I value available phyiscal space, whereas you seem to value privacy. Everybody has different preferences.

I've just flown home in 4D last night, and I deliberately chose 4D over 4G, because it only has a physical "wall" on one side and is open towards the aisle on the other side. Being a side sleeper, this gives me more room to move myself around when the seat is in "bed mode".

I think there is no discussion about footwell size, where any bulkhead seat >>>> any seat that is open towards the aisle on one side >> any seat where you have to stick your feet in between the two seats in front of you.

In addition to your feet being trapped the worst of any seat, your body is also trapped between two "walls" in 5D. Therefore, 5D is far down on my list of preferred seats, only the same type of seat in the second business class cabin would be further down.