I will cheer for the Heat to win the championship*, especially if they beat Cleveland, NY, and the Lakers in the process. Anyone who is a fan of the NBA will want to watch the Heat. If you don't, you're lying or just a straight up hater. It's like David Villa joining Barcelona. Maybe you don't like them and think they are cheaters or buying championships, but that team will be so fun to watch.
I don't see the Heat's Big Three as any more evil than the Celtics, who were put together in a similar way. Lebron is the KG in this situation (the Big Prize, formerly beloved by all, but now hated), Wade would be Pierce (the loyal star), and Bosh is the Ray Allen, just along for the great ride. I'm sure Lebron will find some way to Ubuntu his way into our hearts again.
Also, Dan Gilbert is the worst human being ever just for the crime of using Comic Sans.
*except if Derek Fisher signs with them, because he is a diving, cheating cnut, worse than Robben, Suarez, and Iniesta put together.