I'm still waiting for bremainers to tell us the merits of the EU.
All the arguments I've seen focus on how fucked the UK is without the EU, rather than why the EU is great. "You can't leave," "you'll be in the gutter without me," "you're nothing without me"
This is a classic spousal abuse situation. Get outta there UK, I'm sure America has a couch you can chill on until you get things back together.
Personally I've always supported the EU, largely due to personal ideology but also due to pragmatism, I believe in an increasingly globalised world it's necessary for Europe to unite monetarily, economically and politically.
I believe that forming a Federal Europe will result in increased peace & prosperity, not only for Europe but the world as a whole, challenges that face governments today are increasingly international in scope (e.g. climate change, terrorism, economic inequality), and can be more efficiently dealt with when united.
Since the height of colonial empires in the 19th century/early 20th century Europe has increasingly been sidelined and overshadowed by at first America, currently Asia (with the rapid growth of huge economies such as in China), and in the near future Africa.
European populations are aging, putting strain on the society, and European populations are shrinking as a proportion of the global population.
European economies are struggling to maintain strong growth, and the unstable nature of the EU is doing nothing to help that.
European responses to crises such as in Crimea have often been slow and disjointed, Europe often depends too much on the US to maintain world order and promote liberalism and democracy.
In short, I see European integration as a necessary wake up call to what I see as a Europe slow to adjust to the modern world, in some cases willfully ignorant of the fact that this isn't 1912 anymore, Europe isn't the centre of the world. This isn't the time for haughty nationalism, we need to work together to make the world a better place.
My view is more pro-EU than 99% of people, completely unrepresentative of Britain, many would see it as extreme, probably overly idealistic, but it's the view I've always had, and it's why I believe the European project is a force for good and why we should have a hopeful vision for the future of Europe.
I know this isn't what you were asking when you said "I'm still waiting for bremainers to tell us the merits of the EU"