Well, if you're going to go that route...
I know you're kidding, but just for fun, let's see what else was in common between the Challenger and Columbia crews.
Yes, there were 2 women on each mission. There was also 1 black man and one Jew on each doomed flight. Don't forget, there were white guys on board both, too. That doesn't leave many people left over to fly into space, does it? Asians? Well, Onizuka was killed on the Challenger. Native Americans, perhaps?