Remain will win by the looks of it.
A post Brexit UK is too much of an unknown and people fear that.
Whether they should or shouldn't is a different story, similar to the Scottish independence referendum there has been no room for intelligent debate, it's either the immigrants are ruining the country or the EU only wants straight bananas vs the World will end if we leave. The truth as always lies in the middle. Pro's & Cons and all that. It's funny that this debate is happening in one of the most powerful nations in the EU rather than elsewhere. The EU have far less control over the UK than they do over Ireland for example.