I don't think one size fits all. I have been on an AI for five years and I have not turned into an old crone! I don't have any aches and pains (at least none I didn't have before), I am fitter than I was five years ago because I have taken up gym work and yoga, and most people say I look a lot younger than my age (72). It isn't doing my bone density a great deal of good, but I knew that risk, and my bone density at 67 was excellent so it's a calculated risk and so far I'm OK. My oncologist and I are weighing up the pros and cons of 10 years over 5. I completely agree that people need to know as much as possible about treatment and side effects, but as with chemo there are huge differences.