Why did the framers of the constitution stipulate that federal judges be appointed rather than elected and serve for life?

Article III, Section 1 of the Constitution protects federal judges from losing their jobs.

The Framers of the Constitution believed that federal judges should be appointed and serve for life so they would be able to judge cases free from the pressure of the government and the public, even of they made controversial decisions.

which time period is this? or is this story fictional, i'm going to need more info to answer this question

lancelot said to the beautiful ellen i c u r a b u t l n (i see you are a beauty lancelot was the greatest and worst of the knights who became the king's champion and undertook quests in the king's name. he became the adulterous lover of queen guinevere, and they had a son named galahad.