Anyone who opposes life imprisonment should have to detail what they think the appropriate sentences for various notorious mass murderers and when they should be released back into society.
That being said, the list of crimes that qualify for life imprisonment should be decreased, drug crimes should be struck entirely from it, and consecutive sentences should never be allowed to essentially equal a life sentence.
This is a far bigger problem than life-without-parole sentences, which are only really given for first-degree murder in most states. When I hear about someone getting 250 years or whatever, I wish we just made a determination whether or not the person deserves the death penalty instead.
I still prefer death penalty to life-without-parole in those extreme cases, but otherwise I think the maximum sentence should be about 40 years.