Okkaaaaay - a little realism here - some years ago I worked with and befriended a single Mum. She had 7 children by 5 different fathers, a four bedroom house and benefits.
The epitome of the DM's fears for society.
What the DM types do not know:
She was in care for much of her childhood following horrendouse sexual and physical abuse.
She sought love and was unfortunate enough to meet the type of men who took advantage of her. With the notable exception of one the rest left and paid nothing to her for their offspring.
She cried nearly every time I saw her about her past.
She loved her children, was affectionate and supportive to them - they had a childhood (albeit supported by the taxpayer) that was in excess of the one she experienced.
With her past she was less likely to be able to function normally in society - and she was also abused in care.
We do not know the background to many of these so called "feckless" families - they are out there it's true but like the Mum I have just described the story is never as simple as "I'll have another child for extra benefits and a bigger house"
Who is to say this Mum did not deserve her benefits or that she should be made uncomfortable about it. The support had never been there for her. Money in benefits is all very well but does not tackle the underlying issues. Her children are now adults and with the exception of one all working and contributing.