I don't believe in chain gangs, but I also don't believe in letting people just sit in prison for years.
Bundy, in my opinion though, needed be killed. If you know his history, then you know he escaped prison once and killed more women, also his final victim. One could argue he should have been put in a more secure prison for life, but I would then offer my first point.
In some cases, I also don't have a problem with the Soviet solution of taking them to a small room and shooting them once in the head. Total cost to taxpayers: $1.