>…because, you know, all knowledge is good.
According Wikipedia, the countries which have birthright citizenship on their lawbooks are:
Antigua and Barbuda
Chile (under certain conditions)
Saint Christopher and Nevis
Saint Vincent and the Grenadines (which would be a great name for a band)
Trinidad and Tobago
Note that all but four countries on this list are in the Western Hemisphere. No European countries at all, although some European countries have liberal naturalization laws.