The welfare state hasn't failed them, a succession of governments have....by permitting weak idiots to continue to abuse themselves while financing their habits through robbery, as well as parasitically feeding off decent society.
'Just say no' to the scum.
Force them to work for a living, even if just picking up litter and fixing the houses of those who have been burglarised.
Force them to have treatment until they are clean....locking them up during the process if necessary.
The normal law-abiding people of this country are just fed up to the back teeth of these low-life losers, and PAYING every day of the week to clear up their mess.