Re: a matter of pride?
Vaccines are often not 100% effective, so yes, your vaccinated kid can end up infected by the unvaccinated neighbor. Plus many vaccines aren't effective for all eternity but need to be renewed, which may or may not take place, etc.
That's why you have the whole concept of herd immunity - once the vaccination level in a population reaches a certain threshold, it doesn't matter that the protection isn't 100% protected because a disease won't be able to spread through it.
Biting the hand that feeds IT
