Originally Posted by Darth-Nero
Miburos post makes perfect answer for your question in my opinion..
You can make a homosexual hero along with an epic story line that millions will admire..
Beside,What you mentioned about goku will sure make no story because the story style depends on "long life term" with goku having a boy and becoming a warrior like him and a grand son that will go in the same direction(breading is a serious plot key here),while it's a different thing in naruto as you know.
Breeding is more of a plot key in Naruto. Naruto's daddy and Senju roots, kekegenkai's, Senju- Naruto, Uchiha- Sasuke, 1st Sage creating Uchiha and Senju,from the beginning to now, Sasuke "restoring his clan", the fact that clans/family play a big role in the jutsu and capabilities of the ninja in this manga. U can make a homosexual hero, just not here, not now in this manga