Okay, in my experience, I have never gotten stitches, I have either used butterflies or a certain type of glue and you cannot even tell.
My sister OTOH, always decided on stitches and you can see the scars.
Now, it could just be genetics or healing ability...but then how do I explain the top of her head that has no scar after the doctor tied her hairs together, rather than stitch the wound?
Same with my lil sis, she was climbing on a chair turned upside down and fell on the leg, her teeth went through the bottom of her lip, below her lip, the skin part!
And she did not have stitches and you can't even tell that she ever fell. The ER doctors said it would be more traumatic to stitch than to let it heal.