Chiraq announced today that France is to decide freely on Turkey's membership when the issue arises.
By saying "freely" he hinted at a possible veto by France?
As for Greece's position is that they're positive about Turkey's European future as long as Turkey shows willingness to make progress in several key issues, including naturally the Cypriot issue.
I don't share entirely your view, Turkey has a European part which has direct geographical and political connections with Europe. There's no real bond between the different European cultures anyway, it's all about our willingness to participate into something new. As Turkey becomes increasingly more "European", strengthens its ties with the rest of Europe and as the Islamic influence around the country becomes more and more moderate I think Turkey will get to a point where it could be assimilated into the bulk of the European Union. There's a great disparity between the European and Asian parts of the country, in social, economical, and religious terms no less so and I don't think the time is now, not in two years, not in five years but eventually. Turkey has a long way to go but it's definitely NOT a middle east country.
I don't think the issue of one country getting into the Union will be strong enough to cause the dissolution of a 50 year old-plan. But there's undoubtedly an increasing uncertainty of how the Union will develop now that so many countries have become full members and many more are to follow.
As for Turkey only caring about the economic aspect of the EU, I think that's fair enough, but if they want the economic benefits they'll have to also deal with the political ones
As for disagreements, there are certain member states who didn't agree and continue to disagree with regards to key political and economic issues - the UK, Denmark, Sweden comes to mind - so it's not the first time and it won't be the last. The EU was never threatened because of that.
But I do agree that the possible admittance of Turkey might pose a need for a re-evaluation of the whole European idea...or, then again, it might not...