Because it's all part of the same lie. That's what you implied before.

[He counts on his fingers.]

One, it's a lie that I claim to be Italian; two, it's a lie that I don't share my true origins. Because to your mind, my business is everyone's. And now it's yours.

More broadly, I'm tired of you treating me like I'm somehow less than you just because I don't air my dirty laundry for everyone to see. So if you want it, fine. If you think it'll benefit you in some way, fine. If you think it'll make you feel better, fine. I just want you to shut up about it.