//But, Brexit does (or can) mean things to other people less fortunate than you. If the UK economy suffers, than that might not bother you but it can be bad for others.//
I happen not to believe that in the long term the UK economy will suffer. But that is by the way - it wouldn't matter to me if it did. There are some things that you just do not do simply because it may be advantageous to do so. Belonging to the European Union is one of them because it is a pernicious, protectionist organisation. Its main, if not sole interests are stifling competition between its members and making it difficult and disadvantageous for those members to trade elsewhere.
But we've done all this and I've explained, with examples, my reasons for believing this many times. I know it's difficult to understand but it is what it is.
//Which means what, financially, economically, socially or otherwise?//
It means that we shall gradually become less entwined financially, economically and socially with an organisation that develops and promotes policies and regulations that may not suit the best interest of this country, its people, businesses and economy. In short, I like the UK government to decide what happens in the UK.