Stephen Breyer is 82 years old.
Sonia Sotomayor is 66 years old and has had issues with type 1 diabetes.
I'm not wishing ill on anybody here, but the truth is that time catches up to everybody at some point. And out of our current Justices, there are two (that just so happen to be liberal) that are facing their impending retirement.
We will get thomas as well. He would never ever let a liberal take his seat. Not after what the Dems did to his name during his confirmation. The dude is an all american badass