If you only realized the futility of resuscitation efforts. The percentages of recovery are really bad, and those that we CAN save, usually end up brain-damaged and die a short time later anyway.
Full life-support measures are only effective long-term on young, healthy people that have an accident that caused their code.
*shrug* YMMV
There are always exceptions to every rule. My mother, at 71 coded in the hospital, was rushed to ICU and put on life support. After 9 days the doc called the family in and said they had done all they could do and was going to remove life support. Wanted us all there so if there was anything we wanted to say or ask, time would be limited......2 hours to 2 days probably.
Within half an hour of taking her off, she was sitting up in a chair, feeding herself. A few days later she went home and lived 2 more years. She died from an unrelated condition. She also showed NO effects from the experience, she was as she had always been.