> simply being able to go far away on a moment’s notice
Buy intercity bus ticket on internet, 15 minute bus journey to where the intercity buses congregate, get on bus. Or train, but Irish Rail likes to charge roughly 2x as much for same-day intercity tickets as next day.
Now, if you want to go to the middle of nowhere, that's harder, I suppose, but towns and cities are easy enough (caveat: Ireland's transport system is rather poorly designed and ~everything radiates out of Dublin, so this probably only works well if you live _in_ Dublin).
As I say, I do plan to get around to learning to drive at some point (my last attempt was foiled by covid; I got a provisional license in Feb 2020), but honestly it's hard to prioritise.
Kids would be more of an issue, granted. I mostly walked or got the bus to school, but I do think that’s less common these days. As a late-30s gay man, not something I have to personally worry about too much, tho.