I don't know how convenient trains are in Ireland, eg if the speed is roughly equivalent to that in England (or hopefully, faster), but when I saw a nice house for sale in Northern Ireland a few miles from the Co. Monaghan border, I took a look to see if I could travel to Cork easily without driving.
Oh dear! what a shock. The map of the trains at
http://www.myguideireland.com/trains-in-ireland is very strange - it seems that apart from the Belfast-Dublin line, there is almost nothing train-wise in the upper third of Ireland.
How do people in Monaghan or Donegal get to Dublin? There appears to be no train at all for them. And some other counties too are just not on the map.
How would people, say, in Galway, get to Belfast? By changing in Dublin? I thought EU money was designed to link up Europe rail-wise?