It's Aliza, the Med Librarian and BC patient. We've chatted before. I understand your reluctance and yes, the side effects from those drugs can be unpleasant, but not everyone gets them or all of them and each of them is a bit different from the other (which is why your oncologist will decide which to go on if you decide you want to treat).
One thing to remember is that everyone handles the side effects differently and what you read about are all the women who have side effects. Those who don't, don't write in about them, so my advice (your oncologist might agree) might be to try at least one of them initially and see how it goes (take it one day at a time-or a week at a time). There are other tricks to get through the side effects from what I've heard-maybe Claritin for bone pain (check with the oncologist for that one, but there may be others.
Ask about how much your risk of recurrence is reduced by your taking one of these. That statistic may also motivate you to try these A.I.'s out.
I hope you do what's ultimately best for you and certainly what will help you to have the least chance for a recurrence.