Platitudes like "we are all in this together" were never useful. If you had that feeling at the "nation level" at some point in the past, then you were mistaken to have it. But to replace it with "we are all against each other" is equally false and useless.

You're totally free to leave, and if it makes sense for you to do so, then do it. That is the correct outlook for everyone to take, at all times, regardless of the EU referendum result.

The trouble is, there are a lot of people out there claiming that they will leave, not because it's the correct decision for them, but because they've bought into this false reality regurgitated by the media that the UK has in someway changed for the worse, instead of the reality that it has and is becoming a more and more liberal and less prejudiced country over time. The common term for this is cutting off your nose to spite your face.

You can leave, but make no mistake, wherever you go, you will find there are people who are racists, and there are people who dislike you for being an immigrant. The UK is a lot more welcoming and a lot less racist than most of the countries in the EU.