@liberoncolours I know what you mean. It is different, for sure, if you are rurally based - and equally, if very city centre based (and UK has bigger cities than Ireland obviously) so getting to open spaces easily could be harder.
But @mathanxiety has it - there are still ways to manage the isolation effectively & safely. Today in Ireland, we're advised that children playing outside should do so only in small groups of 3 or 4, and keep appropriate distance. This is doable.
You say 'many months'. It will be several more months until Covid tapers, for sure. What the Irish government is doing is taking a position on where we are now, making a clear statement for a defined period so that people can, to a degree, easily follow it.
We are all aware that it's not going to be sorted in 2 weeks and that further restrictions will be needed. In my workplace, we are working on plans but also having to go day to day.
But we don't have to deal with that for 2 weeks, essentially. That allows people to get on with life in some structured way as much as possible, helping to avoid chaos and panic.
In 2 weeks the curve is hoped to have been flattened. But there will be many more cases, and though Ireland to date has only had 1 death, there will be more, and the authorities have been very clear on that.
That kind of leadership is a way of creating safety and provides reassurance too.