Divergent

What makes two siblings or two friends, With lives not quite emergent, Choose two paths that lead to places Totally divergent? For their growing up together, Though it surely forms a link, Doesn’t guarantee a future Quite as close as you might think. Unlike branches on a tree trunk, Those connected when they’re young Are like seed pods which a whirlwind, In its haste, has wildly flung. So they end up living far from Those for whom they strongly cared, Never dreaming how lives differ From the one they once had shared.