I voted to leave for the following reasons
A) The interference in our lawmaking and the effects of the European control on issues such as human rights.
B) That decision making appeared to be controlled by unelected commissioners
C) Countries with weaker economies were aligning too closely with the France Germany power bloc so voting within the EU was no longer fair to countries who saw things differently to the French and German
D) I and many of my peers voted to join a common market, not a European equivalent of the USA.
E). I hoped we could still agree terms that allowed movement of genuine workers between and member states, if not completely freely but maybe with fewer restrictions. Everyone got so wound up with what would happen with Northern Ireland it seems everything else was ignored in the name of expediency.
F) The common currency, but more for what that change would represent in terms of national identity.
While I would like the introduction of a more Australian approach to immigration Geography makes this problematic. Australia is protected by a much wider sea barrier, unlike the UK, and there are too many relatively short sea crossing points into western Europe as a whole, as well as the huge land borders with the East. It didn't figure as part of my decision making.