I should really be more informed on this matter as it's a huge topic of debate in the UK rn. Atm I think we might as well stay in the EU, I don't think it's really detrimental to us to be a part of it.
Even if they do, it'll be a "soft exit" for the sake of UK exporting and trade within Europe if the UK wants to sustain any sort of economic power in Europe. Brits will probably vote to exit, but it'll be more ceremonial than actually meaningful - trade and movement will continue as before.
No.
China, India and Brasil will become a bigger threat in the future economically.
Us Europeans need to team up together to even have a chance globally cuz we often take prosperity in europe for granted. But it's not that self-evident as we think it is.
That's their choice. But I believe it would be a bad decision. EU is very important for UK and its economy would definitely suffer without common market