Having drug trafficking laws to prevent (potential) destroyed families is one thing (though I think all drugs should be legal and no government should have right to dictate what you can put into your own body, but that's not the point at this thread), but regardless of the extent of the crime, I think death sentence is unacceptable in any civilized justice system.
Cause innocent people are sometimes wrongly convicted, and sentenced to death. Life behind bars without the possibility of parole achieves pretty much the same effect for public safety, while still giving the wrongly accused a chance to live. There are also rare cases in which new evidence overturns their conviction decades into their sentence. If they're put to death, they never get that chance.
