B on the right side would be great.
Why?
It's a honest question.
I mean, "B" is exactly at the middle (considering home keys as reference), which initially means it wouldn't matter the side.
But then, the two rows above have 5 keys each (Q,W,E,R,T and A,S,D,F,G).
Also, the right side is overpopulated with 2 extra columns of symbols between the letters and "Enter".
So it makes sense to let "B" on the left side.
Is there a reason to put it on the right, besides personal preference/use?