EU is a huge threat to all member countries

The EU isn't so much a club, but more like a uncontrolled bulldozer.
It's completely run at the moment by a few people, who are not elected and not accountable.
Look at Angela Merkal. Although voted as an MP in Germany she is calling the shots with;
Jean Claude-Junker (who hates the UK)
Hollande ( French are net takers from the EU coffers).

It has now arrived at the point, where countries won't pull out, because of fear of the unknown, of not being in the EU, no matter how much it costs.

Cameron will sell the UK soul and heart and we won't be able to do anything about it.

Since the EU was signed of original 9 countries, it has grown out of control from an ideology that was based on Economics into a beats of politics. The more politics, the more can be done and with no accountability. Look at the UK parliament, it's so bad now that we don't have MP's fighting for it's electorate, but fighting for an ounce of something to justify their jobs. However, they will lose their jobs soon, by the very fact of what they are doing. Let me explain.

Cameron and his cronies are fighting for the UK to stay in the EU. If they succeed, this will allow the EU to do whatever they want. Since the EU was established we have seen the EU agree on numerous items, only to get around them, or to change it all by changing the wording. When it's realized by our MP's, it's too late and nothing can be done. This is how they will lose their jobs, because the EU will eventually impose a single parliament for ALL member states. As we are all one, then we can have a foreign parliament controlling the UK, with maybe a few UK MP's and thats it.
The UK Parliament is run by civil servants, not the MP's and the same is for the EU. None descriptive, not accountable, and no transparency.

Europe has always been jealous of our tax system. Even today the French are criticizing that Google only paid 130 millions pounds in tax and now says the UK is a tax haven!
No mention of the fact that all the large selling sites have their taxes registered in Luxembourg and therefore, may very little there. Who is stationed in Luxembourg? yes it's EU Legal system and EU parliament off shoots.
Once the EU get their hands on the UK PLC they will impose taxes all to go to the EU.

Armed forces. The UK is depleted and there is a EU task force. However, the main member, Germany, states in their constitution that they cannot go to war! That's why the German forces will not be at the front line.

Economy. Again the UK has always been good at managing it's economy over the hundreds of years. The Europeans have always had difficulty in this area. You can bet your bottom dollar that it will always be the UK at the bottom of the pile for helping in this line. If we are taken over, how can we create competition by lowering prices by using Foreign Exchange or interest rates. We won't because the EU will control it all.

The EU won't agree to an NHS, because most other countries don't have one themselves. So all medical will be covered by private insurance. This will be controlled by the Pharmaceutical companies.

Have no doubt, the EU IS controlled by conglomerate companies and banks, because they control all the member state MP's.

These are just a few things to point out. There are more , but it would go on too long.

So ultimately, if Cameron doesn't stand up for the UK, we can kiss our arses good bye!!
If Cameron stands up then the other member countries will also stand up.