Re: the bold bit - there most certainly are. The EU is far from perfect, even its' most ardent supporters will admit that.
But the question is whether those 'issues' are reason enough to jack it in and harm the country rather than attempt to reform it from within. As
@tim cahill says, I'm yet to hear one, definitive reason why the UK will be better off leaving in terms of prosperity and opportunity for its' citizens in the future. You'll struggle to find a single credible projection saying we'll be worse off inside the EU.