I want to share my experience on AIs. For over 10 years I never used any AI, my average cycle would be 750mg to 1g of test per week. All I used was proviron and some nolvadex at any sign of gyno. Then I tried AIs, same dose test and using AIs messed around with my libido.For the first time ever I didn't feel horny on a test cycle.I experimented AIs for over a year, different doses and different kind of AIs, I also got plenty of bloodworks.And gues what, wether E2 was high or into normal range, the libido problem was always there. So I stopped, go back to no AI and libido perfect again, no matter what level my estrogens are. So I conclude that AIs really affect libido in a negative way, maybe not for anyone, but surely for me. I just would like to know if anybody else had a similar experience.