Frame your argument a little differently - you're saying you can't be proud / ashamed of anything your parents have done (that you didn't contribute to).
Pride or shame is by definition a feeling not legal culpability. A feeling.
Human brains seem wired to have strong feelings about their kin or tribe. So, yes, I would think having neutral feelings about your parents would be a hard thing to understand for most people.
Will you send a child to prison for crimes committed by their parents if the parents ended up dead by the time found guilty?