Why no "limit" to a model select/update?

No need for that! All the database engines I know handle that for you. If you lookup a primary or unique key it will stop upon finding it. Maybe some alternate database types would need this down the road but for now it’s a non-issue

Thanks. Yeah I heard that from a few others now too. That's just one of those things I never heard of specifically from any videos or reading any docs so I wasn't sure.