We reflexively hate seeing pictures of ourselves and hearing our recorded voice.
Something just feels so off-putting.
In both, they're deeply in the uncanny valley: something deeply, fundamentally familiar, but… wrong.
For voice, we're used to hearing our voice as it resonates inside our head, not outside of it.
For pictures, our experience is only seeing ourselves in mirrors, so seeing ourselves unflipped everything just feels… wrong somehow.
Everything feels lopsided, because it's off from the familiar baseline of what we know it's supposed to look like.
The differences are made more prominent because we're so familiar with the baseline, making it look even more caricatured.
Things in the uncanny valley generate reflexive revulsion.