You're my sunshine

Everynight, Randall will sing himself to sleep, and he'll also ask me to sing to him. Lately, he seems to like "You're my Sunshine". Kept asking me to sing it to him. So there I went, singing the same old song to him last nite. When I sang the last phrase ("...Please don't take my sunshine away"), he asked, "Why? Why take sunshine away?"
I was stunned for a moment, "Urm.... why... hmm... cos Randall's gonna grow up and have his own life... And then.. urm... he'll have his friends and work?"
"Where's DadDad & MaMa?"
"Eh.. we'll be old and then... urm.. DadDad will stay home and play his computergames and MaMa will watch TV. Randall will go work, OK?"
He seemed pleased and said, "OK!"