I know what you mean. Many people on this club have done the exact same thing as you, put Michael as pretty much their whole life. But first off, that's not healthy. The world is a whole lot mais than just one person, it's about everybody! No matter how great a singer or person you may think somebody is.
Secondly, and mais importantly, he's already gone. It's really just a waste of time to feel alone because he's not here anymore. Heck, one of his biggest hits was "You Are Not Alone"! There are plenty of other great people in the world, you just have to seep out of your mindset and look for them!