Warning: Time Travel Paradoxes are notoriously difficult to resolve. Please do not attempt to travel through time without proper training and equipment.
What if you went back in time and prevented the invention of the wheel? Would that mean you're the cause of all human suffering, or would you be a hero?
But wait, what if you went back in time and intentionally prevented the invention of the wheel? That would mean you'd have to explain to your ancestors why they're stuck with flint knives and crude huts.
Ancestors Are Annoyed