The split keyboards themselves feel completely unnatural to me, because I press the middle keys differently, depending on what letters are immediately preceding

The split keyboards themselves feel completely unnatural to me, because I press the middle keys differently, depending on what letters are immediately preceding the key in question. For example, when typing "keyboard", I type 'y' with my right hand, whereas while typing "completely, I type 'y' with my left hand. In both cases, it means that I don't need to stretch my hands as much. If an ergonomic keyboard does not include duplication of the middle keys, it adds quite a bit of confusion when I reach for a key that isn't there.