That logic leads to infinite regress... If everything has a parent, then what's the parent of that thing. So either there is an infinite chain, or the logic is

That logic leads to infinite regress... If everything has a parent, then what's the parent of that thing. So either there is an infinite chain, or the logic is flawed -- e.g. it's possible to not need a parent. Another possibility is that our conceptions of causality / structure / parenthood are fundamentally flawed (but still useful for human purposes at this point in time), and the question isn't fully coherent.