So I was watching Z Kai the other night and ended up with this idea after seeing Goku meet Goten for the first time. I've just always liked the love story between Goku and Chichi (even if it feels strange and complicated at times, if that makes sense). I also liked thinking of Chichi's quote of "I married my first boyfriend."
I'll also add that it's been years since I've seen the original Dragonball, so the children image was more of an on the whim thing ^^;