How would you feel if an old man you've helped out is a offender?!?

Oh my God. I would be just the same - sickened to the pit of my stomach. Why the hell is a repeat offender like that not in jail for life?! I certainly would never be helping that man again, and I would absolutely be telling every last person who helps him too. Firstly for the very reason you gave - I would feel it were my responsibility to ensure that kids were not left alone with him (or preferably even allowed close to him supervised - just the fact that he'll be looking at them in that way is sickening enough). Secondly, honestly, and I don't care how heartless this sounds - I would hope everybody would follow my line of thinking and boycott offering this evil monster any of their kind help. He should be rotting away in a jail cell, not living in a house with full freedom having people look after him. I don't care how old and frail he might be, he deserves to die alone and in pain.