Long-term steroid use and libido

October issue of Musclemag contained a 4-pg article by G.Elder on the effect of testosterone and dopamine. It seems quite little is known about long-term t-use and long term problems on libido. In the article it mentions examples of individuals who had done small cycles, with HCG/Clomid, still libido problems persisted.

What data is there regarding long-term replacement, in effect, life-time replacement therapy and libido? Is it a known fact that someone who is receiving 200-250mg every 10-14 days will eventually experience libido problems? I realize that this may not be an issue with short cycles, but am interested in knowing specifically long-term use expectations.