So let me deal with some of their more popular spouts in turn.
"We don't know any facts"
"We don't want more immigrants"
In fact only about half our immigrants are from the EU anyway.
Fancy a curry tonight?
"We're one of the world's most successful economies. We don't need the EU. They need us"
"They will still want to buy our products and sell theirs to us, so they will agree to free trade"
"We'll be responsible for own future"
"They're bound to agree free trade deals with us"
"They'll still want to buy our stuff"
The British economy is doomed if we leave. Many other difficulties will emerge if we alienate ourselves from 500 million neighbours who broadly want to tackle large issues with unanimity and collective expertise. We'll find ourselves ostracised from science, technology, culture, debate, security and general goodwill if we tell Europe to fuck off. Brexiters seem to think we can live in an isolated world. They should get out more!