Hmmm...well I'm not really a normal case when it comes to libido, but i'll throw my hat in the ring ^^;
Sooooooooooo I was addicted to sex before I started HRT >.>
Since starting HRT, things feel much more within my control...and a great deal more manageable...like somebody installed a "switch" on my sex drive that I can turn on and off normally. As to whether that is a result of hormones impacting my libido, or me getting over my addiction, is up for debate...
In general it's gone from "Think about sex all the ->-bleeped-<-ing time and plan + clock watch until the next session" to "I don't really think about sex too much in my day-to-day activities, but when I do, holy ->-bleeped-<-! You best get naked or get out of my way, cause it's that time!"
The only thing that throws a wrench in the works for me is the spontaneous orgasms that HRT seems to induce in me >.>
It's apparently a very rare and bloody inconvenient side effect...which we can't do too much about atm apparently :S
So if I have one of them during the day...yeah it jams the switch on for a while and I have trouble turning it off again >.>
...that's way too much info but WHATEVEEEEEEEEEER!!! ^^;