He's never truly had a "definitive" story, his Justice League tenure didn't exactly set the world on fire, he has a dubious Apokalyptan origin, he's currently M.I.A. Despite all of this, his is one name that almost always comes up when asked about people's favorite comic book characters.
In trying to figure out why this character works, I find the one thing that makes him soar.
Despite his life, literally, being a circus, despite being born "Scott Free," he's found a home. He's found his anchor. He's found that one thing that will always lead him back home and it's his woman.
Big Barda is what makes Scott Free work.
Trust me, I'm no romantic but there's just something so damned cool, knowing that no matter where he is, in a universe as big as DC's, no matter what the odds, Mr. Miracle's main reason isn't simply to defy the locks someone's put upon him but to get back to the one he loves. The threat of death means nothing to him now. The thought of life with Barda Free means everything to him. He needs her. She needs him. They need each other. Death can't keep these two apart. She keeps his compass true. She is what guides him home. This is evident in their every appearance together or apart.
More so than in any one Superman/Lois appearance.
More so than in any one Black Panther/Storm appearance.
More so than in any fifty Ralph & Sue Dibny appearance.
Mr. Miracle will die when he's done loving his woman. Mr. Miracle's gonna live a very long time.
If The Frees were to ever truly be apart, that would be one of comics' greatest tragedies. All love within the DCU would die, for me, right then and there.
Did I mention this is just one of the reasons I'm not buying Ralph Dibny's over-the-top grief in 52?