I totally agree with you Sara. As long as they fulfill all the terms to join the EU they should be accepted.
Compared with other EU countries Turkey doesn't have a lower standard, I'd assume. (Greece? Bulgaria?) In my eyes it only could be a problem that they have such different sights on the world and don't approve to the European (EU countries...) view.
We have to stop thinking that other countries are a threat anyway (okay, there are some exceptions (e.g. some dictatorships)...
Switzerland works pretty well even without being in the EU, by the way. Though I think in the end we must join... there's no way to have this special treatment forever.

It makes just a lot things more complicated and we adjusted our law and many other things to the EU standards already. In a few decades it won't even be a big step anymore.