Why do Republicans hate the poor so much?

For the rich: money reduces empathy. There a a few funny studies on the matter, including one on lottery winners. Plus the very wealthy live in their own bubble.

For the poor: propaganda. Lack of education in logic, sociology, macroeconomics, human relationships. A complete education is not all math and literature and hard science.

trying everything they can to harm people who need any sort of assistance?

The power-hungry want power, control, coercion. Through media power, cronyism they allied with the ultra rich who have power and want docile workers.

The dominated Republicans are fighting the ghost of people abusing the system, afraid of change, hiding in conservatism, backing into 1930s racism. They didn’t think the powerful Republicans would cut their help, only do something about their fears.

Pretend I am rich? Like how much money am I getting back by Republicans kicking men off healthcare or destroying insurance for those who need it most. It must be alot right?

It’s not about economics: healthcare and general welfare have a net positive impact, up to the point of housing homeless people costs globally less than having them on the street.

Personal gain is really at stake only when said service is repurchased by friends of the government, e.g. medical research, police, military, roads anything can go. Helping the poor can’t really be sold. Policing them, yes.