Judges and their appointment

Federal judges are appointed for life on good behavior. Now there is historical reason for that. but judges were never meant to be lawmakers that power in the American Republic is reserved for the elected legislature, the reason for that is so the lawmakers KNOW that they hold their seat at the pleasure of the PEOPLE and may be removed if they play noble lord. But when a judge is allowed law make..the judge becomes what the framers feared most a ( noble lord) or unelected lawmaker. Think about it. The role of a judge, in my opinion. is to see to it that the rules of the law as it exists are followed in his or her court and that is it. So Bob gets arrested for catnapping and he has signed a confession case closed right? But his lawyer says they beat the confession out of him involution of his Fifth amendment rights and produces pictures taken and dated the hour before the arrist and the now bruised and bloody Bob has not a mark on him. So the judge tosses out the confession and the Case must rest on other proof or fall, the judge cannot say ok becouse ya worked over Bob I am cutting him loose. That would be to change the statue on catnapping.