Posting this for the benefit of anyone else who may assume that your woefully inaccurate comment approximates anything I've implied:
Chris Bosh has had significant health problems that has caused him to be ruled out for the season on two separate occasions. He could very well come back and be ruled out for the season for a third time. If history is any precedent for the Heat, having it happen twice would make them absolutely foolish to think third time's a charm. They have $22M/year that they pay him with the bulk being picked up by insurance. If they bring him back, they lose the insurance and if he goes out again it leaves them in a much more complicated financial tangle of dealing with those repercussions financially. Then there's the cap space issue -- if their actions continue to insist they can bring him back (by bringing him back) it conflicts with any argument they could make to the league that he's irreparable and that the league should grant cap space.
So weigh out the cost/benefit analysis from Miami's point of view. We just covered the potential cost. What's the benefit to Miami in him playing? Wade left last summer and they're not exactly contending at the moment. There's just a lot of risk for them bringing him back and not a whole hell of a lot of benefit.
None of these are black and white issues. This isn't a conspiracy by the Heat. People really fail to see how bias actually works and tend to think there would have to be some type of massive conspiracy. Medical diagnoses and and prognoses have significant limitations and there are huge ranges of variabilities, something the general public really does not appreciate. So when the issue is a guy in his 30s with an underlying hypercoagulability and what exactly a safe return to basketball would mean, you'll be faced with a lot of medical uncertainty and an uncertain prognosis, so when you have a lot riding on that decision, as Miami does, you'll have a tendency to have to reconcile your own interests with competing prognoses that are all uncertain, and it's no surprise that it makes a hell of a lot more sense to have that jive with all the other non-medical realities you have in front of you.