Could you give reasons why the death penalty does NOT violate the 8th and 14th amendments?

Initial Ban. In Furman v. Georgia, 408 U.S. 238 (1972), the Court invalidated existing death penalty laws because they constituted cruel and unusual punishment in violation of the Eighth Amendment. ... The Court also reasoned that the existing laws terminated life in exchange for marginal contributions to society.

In 2005, the Supreme Court held that the Eighth and Fourteenth Amendments to the Constitution forbid imposition of the death penalty on offenders who were under the age of 18 when their crimes were committed, resulting in commutation of death sentences to life for dozens of individuals across the country.