Oedipus Complex - What's at Stake?

The Oedipus complex is premised on the idea that what we desire is what is most proximate to us, right? Like there's a link between lack and desire, lack is desire. And the notion that we would, that presence would generate desire even unconsciously doesn't make any sense to me. I think psychoanalytically, it's not like the wee dispense with the idea.