@gingercat02 I live in the ROI and I'm not remotely misty eyed about a United Ireland. I've posted here before about the practical and financial difficulties a United Ireland would pose.
Take health, for example. Those of you in NI enjoy free healthcare. In the ROI it's means tested. People on low incomes get free healthcare while those on average to high incomes have to pay for everything. Or pay for health insurance to mitigate those costs. Do we extend free healthcare to all in a United Ireland and how much will this cost the new Irish state? Or do we remove free healthcare from the residents of the former NI? Which will go down like a lead balloon.
Then consider education. We study seven subjects for the Leaving Cert. (one of them being Irish which is a compulsory subject). University entrance is dependent on the results of your six best subjects. My understanding is that you take A Levels in the UK and study fewer subjects. Which education system should we adopt in a United Ireland? Will the Unionist population in the former NI be happy to study Irish?
These are just two examples off the top of my head. I'm sure there are loads more. A United Ireland would entail a huge amount of planning and a lot of compromises would have to be made - on both sides. There are precedents of course. Germany managed it and would probably be happy to offer advice and support. But I think there was a strong desire from the people in the East and West to come together. I'm not sure that the same desire exists on the island of Ireland, especially amongst the Loyalist population who perceive themselves as British. If they're dragged kicking and screaming into a United Ireland, how likely is it that they will make compromises? Or take orders from a Dublin government? That's actually my biggest concern. We've seen how long it took to restore power sharing in NI. Will every new government bill in the new United Ireland be bogged down in argument and acrimony? Will we make any progress at all?
It's not that we (in the ROI) don't want you. Ironically, we care about the fate of NI and its people far more than many in the UK, who would happily cast off NI and leave it to its own fate. But a United Ireland would have huge repercussions for all of the people who inhabit our island and it's not something we should rush into. I think it was a very ill-judged and divisive comment from Michelle O'Neill. As First Minister of NI she should be building bridges between the two communities - not pandering to hardline Republicans and sowing further discord.