Being in a multicultural environment in childhood is going to give you intuition, reflexes and instincts. You may acquire basic responsiveness later on, but it's never going to be as spontaneous as when you have been bathing in this environment during childhood.
I have lots of friends and, like me, they're not married. So my kids have lots of godparents - men and women, gay and straight. My loft is always filled with people helping me out with them and loving them.