After my heavy-hearted decision to nuke the Institute and then immediately feeling like this: My synth shaun made me extremely happy again...as if I was given this second, rare opportunity to have my little boy again.
Then reality hit and I realized that he's:
He's nothing more than a fleshy mannequin with a genius IQ w/ free thinking and I just wiped out everything he knows and everyone he cares about.
And he's all "Hi mom! Hey I want to tinker with some stuff, do you have a biometric scanner?"
SCREAM!
Umm, kid, what do you want with that? huh? You passive aggressive little synthetic monster!
For now I have the innocent looking striped-shirted monster at the Castle with....Danse.