[Cronos]

1. I never said the UK is in the Eurozone.
2. The economic union does act in the best interests of the UK -- it makes London the financial center of choice to the Eurozone and it also means that services from the UK face no tariffs going to Europe
3. Immigration policy I would take it as separate from economic union, but ok, if you want to include the two together. The immigration policy gives the UK skilled EUropean workers instead of having Pakistanis -- that's a win. Also, many UK workers can travel and work on the continent or many retirees in Spain etc.
4. About productivity -- look at this link -- the UK's productivity in terms of GDP(PPP)/hour is 51.38 and the countries you compare to are: italy at 45.04, Greece at 32.77, Spain at 49.59 and Portugal at 27.22 -- Spain and Italy are not that far behind the UK. Also note that there aren't that many Greeks or Portuguese, so the productivity is bad, but the total number of working age people is low. This discrepency doesn't affect the UK as it isn't in the Eurozone
6. Germany doesn't really dictate economic policy -- if the Germans had their way, they would push austerity stronger than it is now

7. You say the Economic union can be replaced with other individual agreements with other European coutnries -- that won't happen unless the EU as a whole collapses and that isn't going to happen. What will happen is that England goes out and no one agrees anything with it individually -- England would need to negotiate with the EU as a bloc

8. the UK is no more geographically distinct than Sweden or Finland is from Germany. The Channel is hardly any distance and hasn't been an obstacle for people right from Neolithic times.

9. The UK is no longer culturally distinct -- I lived there in the early 2000s and they are no longer the "ole England" -- the culture there is degraded heavily, heavily.

10.The fact that they can exit easier than others doesn't mean they should exit. It's not a great club, but leaving it is worse

[RFEngineer]

You make some valid points, but not this one:

“unless the EU as a whole collapses and that isn’t going to happen”

EU collapse is inevitable. The refugees are already forcing EU countries to exercise their individual sovereignty more than the EU would like them to be able to.

The best reason for the UK to exit is that the Eurozone is doomed, and has been doomed from the start.

You are right Germany would dictate austerity to a far greater degree than is presently in place in countries like Greece.

Ultimately that is why the EU will fail, or at least fracture significantly.

The least productive areas have never maintained the economic discipline that the EU itself calls for - and have never been able to before the EU. Under a common currency this causes a huge burden - such as in Greece where they simply cannot and will not pay their debts (unless someone else gives them the money to do so).

The UK would be wise exit, despite the shorter term pain it would cause.

London is the financial center more because of US economic policy than their EU membership. This is likely to change with a new administration, assuming Trump wins, regardless of London’s EU status.

All that said, I have no idea what the UK voters will do.