Originally Posted by DACrowe
But Selina Kyle? That one sticks for a reason.
Yes, because above all else, she is one of Batman's most well known, enduring, and popular adversaries, a female empowerment icon as well as a sex icon.
Catwoman's popular because of factors independent of her romance with Batman, though that also plays a role in her appeal. All those girls you listed were simply love interests, nothing more. Catwoman has many facets to her that appeal to people. As a character in her own right, Selina Kyle is great. As Batman's Love interest? Overrated.