It would seem logical.
A B C D E.
But QWERTY was never about logic.
It was about mechanics.
Here is what actually happened.
In the 1870s, early typewriters had mechanical arms called type bars. When two commonly paired letters were pressed quickly, the metal arms would collide and jam.
Frequent jams slowed typing and frustrated users.
So the layout was redesigned to separate commonly used letter pairs.
Letters that often appear together were spaced apart to reduce mechanical interference.
The result was the QWERTY layout, popularized by Christopher Latham Sholes...