Just a hunch on my part. I too thought that scene was touching, yet sad. However, In remembering Michael's response to Anthony's question...."someday", I just feel (and it seemed to show in facial expression to me), that Michael was not thinking in terms of a child going to work with his "daddy", how cute, but rather of the possibility of the child following in his footsteps of crime when the time was right.

He loved his kids, I believe that, but I think, at least at that time, his desires/ambitions for his only son, would be to follow in his footsteps because at that time he lived and breathed the "family" business. Everything/everyone else took second/third place.

Just my opinion.

TIS

PS, for some reason it bugs me not to put at least one graemlin in my post....so here