1) Was raised Orthodox Jewish. I tell other Jews that all the time. Also point out that as I no longer practice, I don't consider myself Jewish, although I'm happy to hang out with other yids because kosher meat is generally better tasting.
2) Yes, everyone's been killing everyone for a long time. Genocide != Eugenics. The only people that make that argument are the people that use Reductio ad Nazism to win internet arguments... Oh, wait!
3) Precisely what the fuck does genetic manipulation of people to remove negative attributes from people have to do with them being denied insurance?
You'd be removing the reasons they'd be denied said insurance.
And furthermore, any future that's likely to have this level of genetic manipulation technology is likely to have that shit put on a database from the moment you're born, regardless. As it is, every single one of us on this forum are in hundreds of databases. I assume you were all born legally in your country of origin? Most fucking likely, your blood type, size and weight are already on record along with your name and parents.