Should Supreme Court justices have their terms limited?

[Joe Republic]

I'd impose a single term limit of 18 years.  The terms would be staggered in such a way that each seat becomes vacant every two years.

[Joe Republic]

I'd impose a single term limit of 18 years.  The terms would be staggered in such a way that each seat becomes vacant every two years.

There'd still be additional unplanned vacancies, of course.

... with special nominations and confirmations to fill them accordingly.

[Joe Republic]

Why are people acting as if 9 justices is some sort of divinely mandated number in coming up with term length proposals?  It's not even Constitutionally mandated.

I know, but 9 is fine by me.  An odd number of justices is preferable for obvious reasons, and 9 is neither too many nor too few.