This is where I will need to disagree with most of the "pro EU" guys in the thread. IF we leave the EU but are allowed to remain in the free market (similar to Norway for instance) it would benefit both the UK and EU economies more than us staying and vetoing every plan we do not like. With the UK out of the way, it will give both France AND Germany more weight in pushing through tough fiscal policies for austerity along with giving the EU central bank more control over all of the EU's national banks, therefore preventing another crisis similar to the cause of the worlds current financial woes. I am not anti-EU, I just believe at this time it would work in both parties interests for us to move away from the front lines, and allow us to get our own house in order, so to speak.
There are a lot of petty comments flying around in this thread regarding "We need them more than they need us" etc, which most level headed people know not to be true. If the UK left the Eurozone entirely, with both sides taxing imports / exports it would destroy all economies in the EU not just the UK (as others have provided sources for.). I truely believe both sides stand to gain more by the UK leaving and not having such a vested interest in how the EU budget is set and spent. Hell, in a link I provided early, the plan seems to be that if the UK were to leave we would still pay into the budget for the next five to ten years anyway, without getting the subsideries back... I see it as a win win situation, as the UK get to remain distant from our Europeon cousins (lets be honest, culturely we do not have a lot in common other than centuries of fighting each other) and you guys get to call us names behind our backs in the Europeon parliament