Why so much hate?

I don't talk about bitcoin anymore cause usually when I do I'm bombarded with hate for it. I get if you don't understand it, I get if you don't think it's a good investment or you have better investments. What I don't get is why so passionately against it.

If bitcoin does what I think it will do (go very very high) how all the haters will feel? Any similar historical precedent for this you can think of?