It’s hard to balance but while you can get support from how other people cope, you can also get firm ideas about side effects that may never happen to you. I did the full 10 years on blockers (letrozole) and yes, I did get some side effects but none of the aches, joint pain and menopausal symptoms that others experience. Depending on what is recommended it may be worth giving any treatment a shot. You can always stop if the side effects are too limiting (and may not wait for four years). Best wishes for whatever treatment you undertake.