1. Bitcoin will probably make a lot of people rich especially for long term holders... again
Yes exactly, especially if they buy the BTC in the bearish market and sell them in the bullish era. But many people or especially newbies are not patient to wait for the long term. However they may be panic enough when the price of the BTC is dropped again and again.
3. Bitcoin can save the world
I read some news and history about how Bitcoin can save the world, how Bitcoin can really save someone's life, like what happened in some certain countries, they are still able to buy food and other things to do in their life because of Bitcoin. But, why do many people hate BTC so much?
4. Bitcoin is not very easy to understand and there is too much misinformation about it.
It is also a process to understand Bitcoin technically. This may not be easy for many people especial the one that is not familiar with this kind of certain technology. But, this doesn't mean that it cannot be understood. This is only a way for learning more