Gordon Brown and George Osborne were both keen on paying off historic debts (much to the annoyance of those of us who wrote essays about them). GB was keen on wrapping up WW2, GO settled the last Consols (which traced back to 1751 and had subsequent issues linked often to war financing). A friend suggests that some debt from the first decade of the 18th Century is still in the general pot... or pit. Best not talk about never repaying a lot of WW1 debt and walking away from it. But be that as it may, it has been normal for western economies to finance themselves through borrowing for centuries now and the UK was a leader in so doing and so much UK economic development and history is linked to that.
Many readers of this post paid taxes that to some extent paid off interest on Napoleonic Wars debts (possibly wrapped up in 2015 by GO). Did it bother you? Well a lot of people didn't know. The state has borrowed in multi-generational repayment schemes and things here have tended to keep on going. There have of course been crises.
So we need to take care when it comes to treating a national economy as if it is a household budget. That's not to say that things are not in a worrying state at the moment. A slow drift, exacerbated by the 2008 Banking Crisis, COVID, demographic shifts and so on plus massive complacency and a failure to have a true national debate over how (and what) things are financed.
I don't think the current UK government is up to the job of dealing with an economy (with both hands tied behind their collective backs because they impose restrictions that are daft) facing various challenges, nor with honest debate leading to some consensus over What Is To Be Done?
What is to be done, is of course both short and truly long term. The debts of the forefathers/mothers get passed down collectively to their grandchildren. That will not suddenly stop.
I'm not sure many politicians are. Therein lies one of the problems: mediocre representatives, with mainstream humans disincentivised from activist political participation.