Republicans in Congress are heartless bastards. One of the aspects of extending unemployment benefits is that the money received by the unemployed actually stimulates the economy. Economic experts estimate that 800,000 additional jobs will be lost as a direct effect of not extending unemployment benefits.
The benefits not only keep people on the brink from starving or going without entirely, but it also puts money back into the economy immediately because it is spent immediately paying the rent and utilities or at the local grocery store, doctor's office, cafe, or gas station. The only conclusion has to be that Republicans want the unemployment rate to rise so they can use it as political fodder to attack the administration. This is criminal and evil behavior.