Well I can personally say that I am very, very, far from sterile and I cycle on a regular basis. I am sure most other people will tell you the same thing.... it is very rare to become sterile if you cycle properly. Heck, even if dont it is still very hard. Just look at a lot of the old school bodybuilders, they very rarely cycled off, if at all, and didnt have half the support drugs we have now, and they were still able to concieve children. Like most things related to steroids and the media, if there is even the slightest chance of a certain negative side effect, it is way over-hyped to be a 100% certainty of occurance.