Despite all the crap in the media, there is still a decent majority in Northern Ireland in favour of remaining in the UK.
There cant possibly be a reunification for at least another 30 years without it resulting in an all out civil war.
Everyone in Northern Ireland who is a loyalist (wishes to remain part of the UK) knows at least a couple of people who were murdered or maimed by the IRA / INLA and their offshoots.
While those people are still alive, they wont sit back and allow the country to be handed over to a completely hostile state.
Most mainland Politicians are aware of this, and although many of them would loved to have got rid of N.I. years ago, they know that in the short to medium term , its a non starter.
I hope it never happens, but if it does, I hope its not in my lifetime as to me, it would be an utter tragedy.
Boris undoubtedly made a mess of it when he negotiated his Brexit deal, which is now the cause of the problems there. Although to be fair, Treasonous May left him a very poor hand to play with.
Its almost never mentioned, but his Brexit deal with Varadkar actually rendered the Good Friday agreement, null and void.