Countries that have a very high focus on the 'rehab' part of prison usually don't issue lifetime and certainly not multiple-lifetime sentences. Instead they ten

Countries that have a very high focus on the 'rehab' part of prison usually don't issue lifetime and certainly not multiple-lifetime sentences. Instead they tend to send people into mandated psychiatric care (in practice often life-long) or, if a person is 'sane' yet still very likely to cause damage to others than they are placed in 'preventive detention' which is still just 'being in prison' but does not carry any punitive notions and needs to be actively renewed every few years.