Not all mutants hated their abilities, powers, appearance and a world they've been existed. but the world of mutants become harsh, violent, and no peace to live along with the ordinary people.
People and mutants hated each other, because being a mutant sometimes normal people would always think they were monsters, criminals, and ugly creature that must be terminated.
some powerful people used them as a gamecock in the games. So it is not easy for mutant to live and acquire a peaceful life with their family especially if they don't have strong power to fight against abusers.
Prof. Xavier knew alot of mutants all around the world, because he has the ability of telepathy, and the neurotransmitter which capable for him to reach the location of every mutant.
The X-men were also known as superheroes that saves lives of human from terror made by their enemies.
but, there is a doctor (a dwarfed man) who had been experimented and discovered the syrum (known as Anti-Mutant) that turns mutant into human —a normal being. But not all mutants agreed, so when Magneto encouraged them to fight against the government implementation they reunited as one organization, one goal—to fight in behalf of their powers and abilities.
So, they had to resist with the military that screwed them just to keep their abilities, since being a mutant, you will be able to maximize yourself more than the ability of normal people. However, X-men helped military to fight against rebellion.
The succession of the anti-mutant project was effective in eliminated the numbers of mutants.
Those who dreamed to be human, and maybe, being a mutant for them is a tantrum for their happiness. they didn't saw how wonderful if it has an ability. so they were vaccinated just to remove their mutational abilities and powers. However, other mutants who didn't want to be human, were secretly forced to be vaccinated, terminated and put in jail. Especially those who dignified to protect their abilities, and their Mutant form. The millitary and the government caused for mutants to experience great violence and almost killed them.