Why are people so nasty?

So yesterday I found myself in a not-so-fun situation.

Our area was to be hit by a few (3-5) inches of snow as well as sleet and freezing rain.

Remember that babysitting job I mentioned on here? Well, I was due to babysit THIS Saturday. I had planned all week to babysit today thinking the weathermen were wrong and it wouldn't be too bad.
But yesterday the forecast seemed pretty terrible. and one of the things I try to avoid at ALL costs is driving in the snow. it honestly gives me panic attacks, but we won't talk about it.
So I so kindly texted the mother to say if the roads were snow covered I wouldn't be able to make it. (It's at least a 25 minute drive) She responded to let them know at LEAST two hours before. As I kept looking at the forecast I got more and more freaked out and decided I should cancel for sure so that they could find someone else.

About an hour later the FATHER texts me about 4 texts in a row, telling me I'm fired. He told me they would be crazy to have someone as irresponsible as me watching their son, and that no one should ever leave me to care for their child. And much more nastiness.

Seriously buddy?!?

I was sorry to inconvenience them but man OH man, he took it a little far. He also said he would leave me bad reviews and basically "stalk" my profile so that I couldn't get other jobs. (I use a website to get jobs)

It was ridiculous not to mention totally upsetting.

It's hard to not feel like it's a reflection on ME.

It's a big, HUGE reminder that our world is broken and fallen and that people are just so...RUDE sometimes.

It makes me feel SUPER aware of how I'm treating other people, because I would never want to hurt someone like that.

Gosh.