Sheesh Aqua. Are you REALLY so naive??
Let's cast our minds back to when his Tonyness stepped into Number 10. Our economy had just recovered from a recession, the boom was just starting. This is just what happens in a free market economy. There's a boom, there's bust, there's a boom.....and so on.
So New Labour stepped into power at the start of a boom, more importantly they also inherited a balanced budget. As clean slates go, the Tories couldn't have handed over a better one. And whilst Gordon Brown stuck to the Tory spending pledges they'd made, everything was sweet. Economy was rock & rolling, government was in surplus. Everyone was happy.
Then they decided it was time to rip open the nations chequebook. Now any idiot can try and fix problems by chucking money at it. And that's exactly what they did. NHS, here's a few billion more. Schools, here you have some too. Poor people, don't worry we'll give you some....no questions asked. What you say? You earn £40k a year? Fuck it, here's a bit. Just remember to vote for us next election yes? 
And where did this money come from? Not by taxing the rich? Oh no. They couldn't do that without upsetting the rich and upsetting the applecart. So they borrowed it. It's not a problem. Economic growth will sort it all out. I mean, Gordon was so cunning, he'd abolished boom & bust hadn't he? No other government on this planet had been able to in the history of man but Gordon was not just any man! His shit just did not stink. In fact, he was SO confident, he sold off most of our gold reserves at the bottom of the market. Pfft, who needs gold nowadays eh?
Then wtf, a recession hit?? How!?!? I mean Gordon had abolished it! Oh well, governments do what they always do in a recession, they borrow more money and raid their reserves from the surpluses they had during the good times.......Oh hang on......they didn't keep any. And what's that? They borrowed so much that everyone's getting nervous about lending the UK more.
So understandably Labour are out and the only alternatives are in. The Tories and lib dems. They have no choice now, they must cut because if they don't, no-one will lend them jack shit. Labour admit they'd have done exactly the same thing just over a slightly longer time.
But then gullible naive people like yourself come along and blame the Tories for a mess they're trying to clear up. Brilliant.