The problem with the system is always demonstrated on these threads.
Basically, a system which enables people to interpret what they feel is acceptable to themself, and manipulate the system to their own advantage, is fundamentally flawed precisely because people all have differing levels of what is acceptable to them.
We saw just now from a woman who, now she has 2 children, finds she will only have £100 a month left after childcare, feels its not worth her while to work and is better off being on a reduced household income and getting tax credits. If a woman has worked all the time up to her 2nd child, and intends to get back to work as soon as the childcare bill drops again, that may seem a very acceptable decision. But what about if she had £200 per month left over? What about £500? Or £700 - (there was actually a thread this week from a woman questioning whether to return to her job as she would have 'only' £700 per month left after childcare!) And what about the fact that many women just accept the financial hit because its relatively short term, and work for no financial gain?
I think there is a lot that needs to be done, including raising NMW, increasing the housing stock and making childcare tax deductible. But one advantage of the pre tax credits system is there was none of this sense of fannying about deciding whether we made 'enough' profit to work. You had a child, you took maternity leave (and a lot shorter it was then too btw) and if you needed the extra money you'd make after paying childcare bills, then you just got on and did it.
Tax credits are seen by some as a life saver simply because wages are too low. In reality, they facilitate people who don't wish to work, or only want to work a little bit.
Like I said, everyone is different, and people will justify to themself how their family use tax credits. While i think tax credits are a poor system (and thank god things are being reformed)I do have some sympathy for posters like the one who always worked, then by dc2 realises there is very little financial gain, and sees tax credits as a temporary measure. At the other end of the spectrum you have the likes of morethanpotatoprints who by her own admission intends never to work again, even though her children will all grow up and she'll have no caring responsibilities- it's an unbelievable sense of entitlement which is facilitated (at the moment!) by the rubbish system.