Because who needs causality, anyway?
Q: What if I go back in time and kill my own grandma?
A: Well, that would be a grandma problem of epic proportions.
Q: Can I travel to a time before the invention of the wheel?
A: Only if you want to be a caveman problem.
Q: What's the best way to avoid a temporal paradox?
A: Just wing it. No one will notice, right?
Q: Can I travel to the future to get rich?
A: Ha! You'll just end up with future regret.
Q: Will I be able to return to my own time after traveling through time?
A: Only if you bring a Timey McTimeface.
Q: What if I go back in time and try to prevent the invention of the internet?
A: You'll just end up with no internet, no problem.
Q: Can I travel to a time before my ancestors existed?
A: That's a pre-ancestor problem.