What are you talking about? Ireland's population is mere 5M. That's €60K debt for each soul. And over €200K debt for a family. What does Ireland has to show for all this debt?
Others have pointed out that this amount is comfortable enough relative to GDP, but I also want to point of your method of arguing is dishonest. There will never be a day where the entire debt of a country is divided up among the citizens and then they each would have to pay that amount, so saying it’s 60k debt per each soul is kind of like a football fan saying that each Kansas City Chiefs fan each won .00001% of a Super Bowl Trophy last year. It’s sovereign debt.