The idea that the UK can somehow "pull out of Europe" is ridiculous. In today's hugely interlinked trade and financial, it's practically impossible to imagine any country operating independantly, especially when you're talking about the closest geographical neighbours. Yes, the EU benefits from sales to UK, but the reverse is also true. The notion that "pulling out" would leave Europe adrift and the UK in some kind of isolated nirvana is just wishful thinking. The UK is suffering from the economic global downturn as much as any other country, probably more so because of the UK reliance on the banking sector.

If your question is intended to be "Should the UK remain part of the European Union?" then I would question whether it was ever really in it, which is perhaps part of the problem for the UK. It wanted to be part of the club, but didn't want to follow all the club rules. It wanted freedom of trade, but didn't want to join the Euro. It wanted freedom of movement, but didn't want to join Schengen. The UK should not have to bail out countries like Greece, I agree, but in theory neither should Germany, and the UK involvement is absolutely nothing compared to what Germany and France are facing. But that's the problem with a common currency - you gain from common benefits, and you lose from common problems.

The Euro is a huge issue that will probably tear the EU apart soon. But as a currency it's doing OK. I've been in Germany for 11 years now, and the Euro is stronger against the UK pound at the moment than at almost any time in it's brief history.