Eugenics is supposed to make us kinder to the poor and disabled

The point of eugenics is to avoid slipping back into barbarism. Enlightened civilization depends on the population remaining strong, intelligent, and healthy. Under barbaric circumstances, there is no poverty because those who are unable to fend for themselves die off and are unable to pass on this social malaise to their offspring (though in modern society poverty is not always associated with dysgenic composition, social corruption can push the best of us into poverty and the worst of us into riches). In addition, there is no sickness or extreme mental and emotional dysfunction because such people also die off. 

Eugenicists fear that the comforts of modern society replicate social, mental, emotional, and spiritual traits which would otherwise die out in an uncivilized circumstance. Charity and social welfare keep the alcoholic, the lazy, the unintelligent, and the sick alive and allows them to reproduce. The fear is that this class will increase at such a rapid rate that they will outstrip the means of the healthy and industrious to provide, indeed becoming dominant. 

Overburden makes people resentful. One of the arguments of the early birth control eugenicists was that too many children lead to overburden in the parents, who eventually had more children than they wanted, and this caused them to love them less... some said that because of their sunken condition and absolute poverty that this allowed them to so easily throw their too many children into the dangerous industrious factories of the time, an enforced lack of empathy was keeping the ills of the industrial revolution alive. Indeed, having too many poor and sick people makes those who would otherwise want to help become resentful. We don't mind feeding one poor person, but millions becomes a strain. 

Eugenics seeks to reduce the number of the poor and the sick, first by checking their numbers through birth control and abortion, second by encouraging the intelligent and industrious to breed. If there were less poor and sick people, we would not feel so overextended in helping them, and thus we would feel less resentful and not become full of hate. When birth control and abortion become universally applied among the poor, then finally our hearts will become softened because there are not too many to care for and they are not replicating in society. Birth control and abortion should become freely available and incentives should be made for the poor and dysfunctional not to have children, birth control and abortion should be readily available in the developing world. When there are not too many poor and sick for the world to care for, we will see and kinder and more empathetic race.