Been on HRT for 3 years, but I never "feel" it in the usual sense. I have low SHBG so I literally don't feel my Testosterone, get any help with libido or with building muscle. My E2 is always in range, no issues there, no need for me to use an AI. Name a protocol and I have likely been on it....Never been impressed with the benefits, and if it weren't for the fact that my HTPA is shut down, I'd probably bail. Yes, I know its possible to at least attempt a re-start. Might try that next. I had low T before I started HRT, but at least I'd save the $$$ its costing me every month.