I once knew, though only briefly and not well, an American girl with this name. To me, its sound is close enough to
Ashley, a massively popular (though dropping) and ubiquitous name in the US, to render
Aisling itself boring. And
Ashley I've always been so meh about, it's not really
bad, but there's something about it that's never grabbed me. Also, at least here in the US, the spelling and pronunciation issues with
Aisling are a pain. Also
Aisling looks ugly written, IMO.