Leaving Europe is a bad breakup we don't need

The future of Europe is one of those great discussions where it doesn't appear to actually matter if someone knows what is going on for them to make a contribution.
This is a good thing otherwise I would obviously be unable to wrIte about it.
In recent weeks the call from Conservative MP's to leave the EU, or at least calling for such unacceptable changes to the treaty agreement that they leave little other choice, has grown to more than 100. The Conservatives' For Britain group has appeared in a ghastly parliamentary parody of a bad boyfriend deliberately making unreasonable demand in the hopes that his girlfriend will break up with him and leave him looking like the injured party.
At the time of writing British MP's are debating the European Union Referendum Bill, the legislation required for the much heralded in out referendum to take place in 2017. As forgone conclusions go this was a safe bet. Everyone knows that it will pass. There is just too much pressure for a referendum to take place for it not to. It isn't whether we have a referendum now which matters, it is how we vote in that referendum.
The EU is far from perfect and in many ways could do with significant reform. This won't happen just because Britain stamps it's feet and cries though. It won't happen quickly and it most certainly won't happen in one go. The eurosceptics pushing for a renegotiation of the UK membership, supported by a number of disgruntled failed cabinet ministers looking to put the boot in,  know this. If they don't then they have either deluded  themselves or they really should not be allowed close to the debate. They know that the EU cannot change just because Britain says so. Likewise it won't even consider changing when there is a chance that the UK could leave anyway. International politics is a game and relies on states playing it in order to maximise their own preferences and gains.
The question which should be being debated in parliament is what is in it for everyone else. If we were serious about requesting reforms which would ensure that we stayed in the EU then we should be looking at how other states perceive their positions and what the relative gains will be. At the moment Britain had offered nothing in return for getting everything it wants.
An additional issue, and one which seems to be lost on many eurosceptics, is that leaving the EU will diminish Britain's absolute gains on the international stage. At present the United States sees the UK as a gateway into dealing with the rest of Europe. With its exit Britain's special relationship will sour quickly. This is of course something which will please the more nationalistic elements of the debate and what they are hoping for. The problem is that as the UK loses a great deal of support from America's declining hegemony it will lose its importance on the international stage.
This split will lead to a loss of trade which on its own could have been absorbed. Combined with the loss of trade and resources from Europe however it will prove crippling. Trade with China, based in no small measure with an understanding of Britain's ties to the US and its access to the EU economy, will not take long to dry up.
Britain is no longer an empire and it seems that too many people have forgotten this. We live and work in a globalised networked society. An EU exit has only one possible outcome for the UK, economic isolation and collapse. Better the long crawl to reform than the short sprint to crisis.