It really amazes me that martial artists are so afraid of being kicked in the nuts. We ALWAYS have practiced this way in my schools. I can't count how many times I have been kicked in the nutsack. The hardest I have ever been kicked was about two months ago by my son (5' 10" tall, 175 lbs, 15 yr old bodybuilder and jujutsu/mantis practitioner). He kicked me full contact and no mercy during training for the upcoming Great Lakes tourney that John Ervin and Gino Belfiore are sponsoring. I was in pain for over a month. Yet, according to my wife, everything still works just fine.
I am not advocating a "lets try to put his nuts between his ears and crack his pelvis" type of kick. Control should be used (please someone tell that to my son. ).
However, since it is a very common street attack used by most thugs, shouldn't we train against it???

BTW, my leitai is still waiting. Hate to see it collecting dust.