A very topical topic in the UK right now is whether Britain should leave the EU.
There are lots of good reasons for and against. (I have certainly been motivated enough to arrange a proxy vote for a friend to vote on my behalf on this, a subject that I have strong views about!)
To kick off discussion on your thoughts on the matter, you may find it interesting to see that this is not a new subject. This episode of Yes Minister was first aired in 980.