We are never going to have a perfect benefit system. It is always going to be exploited by a small minority unless we make benefits so difficult to claim that we end up with vast numbers of people who need and deserve them missing out. I know which I'd prefer. Far better to have a few piss-takers than a lot of starving poor people IMO.
As someone above mentioned, the amount of benefits going unclaimed dwarfs the amount being claimed fraudulently, and the whole lot is eclipsed by both legal tax avoidance (immoral) and tax evasion (illegal). Did you know that the whole £6 billion savings just slashed from the benefits bill could have been avoided if HMRC had gone after the amount of tax owed by Vodafone? Osborne decided to write it off instead.
I am a single mother with a full-time job. My XP pays no maintenance. After paying childcare and my mortgage (which is less than what I could expect to pay if I was renting the smallest house for my needs), I am left with about £100 less than if I was a single mother on benefits. Do I feel bitter about it or think that single mothers on benefits have it easy? No! It's bloody hard for ALL of us. My life is not going to improve by making anyone else's harder.
The difference is that I have my own home (or will have in another 20 years), I don't have to suffer people thinking I'm feckless, scrounging, or otherwise scum, and I have a future that should get better. When you're on benefits even a future can seem denied you. It's not just about money.
Even for the small number who are playing the system for all it's worth, would anyone else really want to exchange places with them? If the best your life can hope for is to get away with fraudulently claiming as much benefits as you can shouldn't we be asking how we have created a society that lets people grow up with such low aspirations? Could it be anything to do with the fact that the gap between rich and poor is widening? The fact that breaking out of the 'poor' group now seems to many to be as unrealistic as being able to suddenly teleport? The fact that if you've spent your whole life hearing your parents referred to as benefit scum and yourself referred to as a feral child that maybe, just maybe, you don't feel that 'polite society' wants you let alone have confidence in your ability to fit in. And would you even want to try?
Only 2% of single mothers are unmarried teenagers BTW. The stereotypical image of single mothers is completely and utterly wrong. The majority are mid-30s, divorced and working. Like me. But the stereotype makes a more convenient scapegoat of course. As does the idea that DLA is so easy to claim that loads of people are claiming it fraudulently. 