Having been travelling by aircraft for (come t'row) 54 years, I've been cancelled and diverted although not such a long return to base. All the animals on the plane are alive and well. That is everything.
Yes, I know people have missed weddings and funerals and arrived too late to see a person before they died - but the world is like that. Whether it's a volcano or an engine that is feeling off-colour, this is our lives and the benefits of air travel are so great.