It adds new strategy to the game which is why I am hoping they never get rid of it. I don't shy away from guys with 50 or less health, especially pitchers because I can keep breaking them, putting them on the super solider program and turning them into a great player at the cost of having them sit out for much of multiple seasons.
My best two examples of this:
Johan Butcher The greatest pitcher I ever had and the Riley all time strikeout leader was not born but was made.
Jair Sanchez Not as good but still had an incredible year. Pitched 302 innings in a season once.
Both of these guys would have been OK without injuries but the bug and a little bit of luck made them incredible.