Worse than children and animals

It's been about eight months since we had a change of government now but I wish someone would tell me why all politicians behave worse than children. I get thoroughly sick of those that were thrown out at the election last year when they are interviewed on the radio about the cuts to public spending that the current government are having to impose.
They keep whining on about the economy and that the current cuts are both too severe and unnecessary, yet they forget to mention that if they had done things properly during the thirteen years they were in charge, we wouldn't be in this mess in the first place. It's high time they took responsibility for their actions and hold their hands up then admit they got it wrong.
When things started to get iffy in the banks, instead of regulating them, they let the banks carry on so that in the end the public purse had to fork out to bale some of them out so that they didn't go under.
Now we have a coalition government who need to get their fingers out of their backsides and stop the bankers from getting great big fat bonuses because they are in effect, employees of the great British public who are having to pull in their belts at the moment. It seems that politicians do not really understand that the bankers should be made to suffer along with the rest of us and not get five or six figure bonuses when the majority of workers get zilch, regardless of their effort and productivity.
Perhaps the real problem with a lot of our politicians, from every party, is that although many have been to university and got various degrees, many have never had a 'proper job' for any length of time and so have no idea about how to run a country. You only have to listen to 'Today in Parliament' on Radio 4 at 11:30pm to understand what I mean. These are supposed to be educated, civilised adults but you would be forgiven if you thought they sounded like a farmyard full of animals, and badly behaved ones at that!