I think people assume that if we leave the EU, we'll be leaving NATO and the UN. Which isn't the case. We're not going to be cut off from the rest of the world, every policy we have in place now will just be renegotiated, some might be in our favour, some might not, but that's the same as it is now.
I'm voting out, but I can tell with all the scaremongering we'll probably stay in. Also, David Cameron says we should stay, but what else can he say? If he tells us to leave and then the vote ends with stay, he's going to look like a right prick at the next summit.