Sperm nobility is when the sperms cannot move well. Or rather they are not mobile enough. As we all know that the sperms need to reach the egg in the oviduct. But then when the sperms cannot do this by themselves. Then they need to be boosted. As what the injection did. But since then was past. There were not much enhancement in the medical field. These days the solution could either be an IUI or IVF. It depends with the financial budget. Also what could be best in taht case. So I personally do not see anything bad with that Just because the injection helped your parents. Does not mean that doctors should not go ahead and find other suitable solutions. Maybe even the injections could not have worked in other people. Results also differ. But for now let us be happy in fact that there are more enhancement in the medicine field. Personally I do not see anything bad with it.