Mars Needs Women (1967)
Tommy Kirk is the leader of a Martian mission which is sent to Earth to capture women for breeding, but if Earth resists it will be destroyed. Disguised as humans, the aliens abduct their choices of young girls and the leader ends up falling in love with the stunning scientist played by Yvonne Craig.
Movie Trailer: https://www.youtube.com/watch?v=ZNmwwz07ftA
It's obvious why Martian women have all disappeared from their civilization. You don't just abduct women, bring them to your planet for breeding purposes, expect them to cook for you, clean up your Martian man-caves, take care off your little alien children, and everyone knows that there are no decent places to shop on Mars. This is why Earth has women, and you Martian savages don't! LEAVE OUR EARTH WOMEN ALONE IF YOU KNOW WHAT'S GOOD FOR YOU!
Besides, Rob Zombie wrote a song about it, need we say more?