Aromatase Inhibitors: How to choose and manage side effects?

So many here have mentioned that the AIs reduce the recurrence rate by 50%. I have been told that as well, but isn't that just a general statement? I don’t know exactly how to say this in mathematical terms, but your personal type of cancer, lymph node involvement, etc all come into play and ultimately lower that number.

I’m saying this because so many on this site have a better understanding than I have, and can help me figure out- or better weigh my options with these drugs.

I had two tumors in my right breast, stage one and stage 2 triple positive ductal carcinoma. So chemo, lumpectomy, radiation and now 5 years of AIs. I am currently cancer free, and I’ve had some issues with the medication. I don’t really want to take it. I took anastrzole first, had some leg pain and switched to extremestan gained weight, and now back to anastrazole. After going through all this I don’t want to essentially waste those efforts by not completing the treatment, but if the recurrence rate is a much lower number I’d rather be comfortable at 73.