true, but he does have almost 10,000 imouto clones for him to play with....
Anyway, I always meant to mention this. One of the reason I love this series is because it reminded by to 80's and 90's Shonen Action manga. In a sense DB and Saint Seiya has influenced the rise of energy blast, and fantasy battles and as result you don't see many Shonen Action with realistic fighting (relatively speaking of course) that was based on actually martial arts concepts and historical references.
Titles like Kinnikuman and Kōtarō Makaritōru were incredible. But there really aren't anying like that in the market anymore.