Where is it that men begin to see women as prey instead of partners for life?

It begins practically as soon as they're born. People are indoctrinated into the roles society molds them to. All the sexual propaganda on the internet, in magazines, in mainstream media, etc., convinces males they're to objectify women rather than see them as partners to be loved. It's sad. However, it's great for consumerism, which is what's behind the agenda.