In early February, my friends and I planned a weekend trip to Paris for the end of March. When debating whether or not to buy cancellation insurance for our hostel, I remember saying, "I don't think we need it. I really doubt anything would stop us from going, and if it does, I feel like that would be enough of a crisis that going to Paris would be the last thing on our minds."
I have since learned a few things:
1) Do not ever be certain that a crisis will not happen.
2) Buy cancellation insurance.