Age of 24, take propecia. My sexual desire dropped, no morning erections, and my ejaculate volume noticeably decreased. After a month, and a horrible sexual experience, I through out my propecia. Now 30, don’t get morning erections. Rarely wake up and find my penis a bit enlarged....but this is a rare event. My sexual desire has greatly diminished, and if it was a 10 before propecia, I would say it’s now a 5.