I currently have 37 pitchers on my BL rosters. 6 are below 69 in health. I don't pay much attention to health when I'm dealing with stud players but I have found that pitchers with health in the 40s(and below) are problematic.
IOW, if he's league average, I might go "Bah, 65 health. What else can I get?" But, if he "jumps out" at me, 65 health isn't a problem.