I've seen Pat Benatar in concert a couple of times in recent years and I'm pretty sure she loathes this song. Granted, it may be the song of hers that most people remember first and possibly the most successful single she ever had, but she doesn't really have a lot of enthusiasm towards it and kind of seems to make it known. Hard to put into words what she does/says. I'll agree with this one though, played WAAAY too much on the radio, considering how many other great (and better) tunes she has.
I haven't heard her do Fire and Ice since the 80's. The last time I saw her a few years back, she didn't do it and never even mentioned it. Her voice is still pretty damn good after all these years, but I got the feeling she didn't do it because of the high notes, and rather than sacrifice part of the song, she just didnt do it (that was just an assumption of mine though).
And yeah, if I had a choice between Fire and Ice vs Hit Me... I'd take Fire and Ice any day of the week, and twice on Sundays. One of my favorites of hers.