I'd separate worldview from ideology. I think worldviews, for people who have all seen a comparable share of the world over a comparable time era, are going to fall quite close. But ideologies are something distinct from that. Worldviews should influence ideology, but in practice it's the other way around for many people - even as they age. In any case, without that world experience - the values we formulate when younger are going to be based on assumptions that will ultimately prove to be false.