i’m firmly of the belief that it’s designed to be on the left
if you use a calculator with your left hand, A) your thumb (strongest digit) rests on = (most used button), and B) you can write with your right hand
then some wacko put it on the right of the keyboard, so enter is on your little finger and the mouse is miles away[^1] and now we have to live with the consequences
[^1]: yes i realise mouses weren’t around when this layout was designed