He was an idiot, all criminals are, it is a pity he wasn't hit and survived. It might have scared him and made him think in future. The three and a half years he got in HM Holiday Camp means he will be out in 18 months and back to his old tricks.
I apologise, I did not completely comprehend the point you were making, but as much as I tend to agree with you in this instance and sympathise with the situation he faced and also the dilemma he was in.
I also have been in a similar situation with a close relative and at the end was praying she would pass away quickly. Fortunately the end was swift. Sadly he contravened statuary legislation.
I tend agree there is a case to be made for carefully worded legislation for terminally ill people to be able to have their wishes carried out under very strict supervision.