I grew up with the fuzzy armchair nationalism that I'd say most people my age did in ROI. I'm sure some other posters know what I mean - "Brits out", "it's our country", the odd rebel song at a wedding sort of thing. But we voted to give up our claim on NI for the GFA. That vote forced people to think about what really mattered and in making that decision people here in ROI had to let go of the idea of 'A Nation Once Again' and move on.
Twenty years have passed, we have moved on. Pre the 2016 UK vote there was very little thought of a United Ireland here and let's be honest NI wasn't particularly pushed either because slowly but surely NI was coming into its own.
So I'm not sure why some posters here are so surprised or hurt that ROI, having voted 20 years ago to give up the constitutional claim (and then got on with our lives as did the people of NI) might not rush to vote for a united Ireland simply because Britain has created this mess!
If we've learned anything at all from Brexit surely it's that making very big decisions based only on "the feelz" and ignoring or denying the likely social, economic and political impact of that decision is a really, really bad idea?
There seems to be this sense that Ireland somehow has a moral duty to take the economic hit (along with the hit from any kind of Brexit because even the one on the table hurts us) as well as the political and social impact that would go with a UI. Why? We have obligations under the GFA and we should absolutely live up to those but why this idea that we should all be prepared to take potentially a couple of decades of hardship for us and our children because of some vague sense of kinship with the people of NI? I know we have a reputation for being generous but why on earth are the people of Ireland expected to be so much more selfless than, oooh, I dunno.... the English, Scottish or Welsh? Why should we be so much more willing to endure economic hardship, to change our educational/political/healthcare systems, to take on the risks that go along with having a significant minority of a population feeling unrepresented and disenfranchised?
I need something more than "because it'd be the nice thing to do"!