Assume for now that the Big Fella finally showed up a second time around, would you want to kill him - or at least have a few stiff words?
Well, if he was to return for a second time (as he actually promised he would), I'm not sure that any of us would be a position to be having 'a few stiff words', let alone killing him - after all, that will herald the end of times.
After all, first time round he could presumably a least have bothered leaving behind a cure for childhood cancer or fixed it so that earthquakes and tsunamis didn't carry away countless innocent people.
If what I read recently is true, cancer is very much a recent development, reflecting lifestyle and diet. As for earthquakes and tsunamis, you seem to be asking for a less dynamic planet; which would, in turn, probably hold less oxygen and other important chemicals in its atmosphere.
And while we're about it, what's with sitting on his hands for the last 2,000 years? Surely if he'd just deflected a bit the bullet that killed Archduke Ferdinand or squished the first flu virus before millions died in the subsequent events his Dad would have approved wouldn't he?
So, you're arguing that he ought to short-circuit the natural consequences of human and other natural actions?
We punish people in the real world for culpable negligence - why should JC get a free pass if ever he makes it to court?
And who are culpably negligent in this case - humanity?