The problem with judicial appointments is the fact that they tend to go their own way.
The Federal Judge who ruled in favor of gay marriage in Michigan the last time before it went to the US supreme court was a Reagan appointee who has drifted leftward over the years.
In Michigan we elect our state supreme court judges and they remain accountable to the people.
That is a good reason to have both term limits and age requirements for Federal Judges.
We need a Convention of the States.