assisted suicide

As a youngish adult in reasonable health, I am not expecting to be confronting my own death in the near future, I am not currently watching a loved one die and I am not facing a jail term for helping someone to end their suffering. So what's assisted dying got to do with me?
No wife should sit quietly on a random Swiss sofa as her beloved dies but instead be at home, sanctioned and supported by the UK government - who should enable its citizens to die with the choice, rationality and individuality they are blessed to live by.