Before ranting about a subject you clearly don't understand I suggest you read about it first. Leaving the EU would not end in Armageddon as you suggest. Access to the common market is all but guaranteed since we have a £20bn trade deficit with the EU15, i.e. we spend more money buying good from them than they do from us.
Becoming semi-detached with EFTA is what most sane people want because you get the common market without the crazy social and political aspects of the EU that really does cost time, money and jobs. You must also remember that Britain and the EU are members of the WTO so if the EU decided to put up artificial trade barriers up against Britain as revenge for leaving the EU, Britain would win and the barriers removed or the EU would face expulsion from the WTO, hastening their economic decline.
Another thing you have missed is the cascade effect of Britain leaving the EU, I would be very, very surprised if Sweden, Denmark and Finland didn't follow us to the exit. Scandinavian countries look at Norway and see how things could have been in their own countries and if it was proven that the sky wouldn't fall, as you suggest, if one left the EU then I think they would dash for the door before the EU became one of those clubs you could join but never leave.
On the EU difficulties and Eurozone, well here it is laid out in simple terms.
Greece is about to go bankrupt and bondholders are expected to take upto 75% haircuts on their holdings. French banks are the largest holders of Greek debt, and they would be expected to take the same haircut on their assets which means losses of around $120bn in the sector. That means the French banks will go bankrupt without a bailout or full nationalisation. France can't afford to nationalise its banking sector like we did in 2008, their economy doesn't really have the underlying strength to take on trillions in Euro denominated debts from PIGS nations. That means if they tried they would face the same situation Ireland had earlier in 2010 where the government backstopped the banks but found themselves unable to afford it so their ratings were cut and they were forced into a bailout from an EU/IMF/UK fund.
What the French want is the EFSF to be used to bail out their banks, the Germans, as primary contributors, are not going to say yes to their money being used to bail out irresponsible French banks when their own banks are being bailed out with German money rather than EFSF money. The other thing the French want is for the EFSF to be leveraged to borrow money from the markets and use that to bail out EU countries, but that kind of turns the EFSF into Eurobonds by the back door as once leveraged the fund would start paying interest, and Germany would be liable for most of that. So again, Germany are putting up massive resistance to that idea, as are the UK because it devalues Bunds and we hold upwards of £500bn worth of Bunds in this country.
Basically France are about to go through what we did in 2008, an unpopular bailing out and recapitalisation/nationalisation of their failed banks but instead of paying for it themselves they want the rest of Europe to pay for it. The rest of Europe have told them to fuck off.