"I guess I am wondering what all this deficit cutting is supposed to be achieving. I don't know, in real life, anybody who's been made better off under this govt."
This the nub of it.
If the government borrows money either to pay for services, or so the tax rate can be lower than it would otherwise need to be, then everyone now could in theory be immediately and presently better off.
It's our future selves or future generations who lose out.
They either have to pay more tax to pay it back (or just to service the interest), or suffer lower levels of public spending, or choose to borrow loads themselves and pass the problem forward.
Obviously you can't just borrow what you want and keep passing it on forever. At some point the market would stop lending it, and your country could go bust. Well before that your interest rates would go up and the whole thing just gets a bit painful (the market demands higher rates when they see a death spiral or default or hyper inflation as even remotely probable).
People argue about how much borrowing is too much. Personally, I prefer the Norwegian model. They put loads of their North Sea oil bonanza into a sovereign wealth fund. They're fucking sorted. The UK pissed ours up the wall, and also borrowed so much over the years that I believe the total income from UK council tax just about pays the interest on the national debt.
Imagine if you didn't have to pay council tax? How nice would that be? Well, we're still borrowing more than double that raised by council tax, so they could triple council tax and we still couldn't balance the books - we'd still have to borrow from our childrens' taxes.
I think Russell Brand may have advocated just cancelling the debt. A fine idea. Unless you have a pension fund and don't fancy that also being cancelled. And unless you like buying products in UK shops that are imported using British Pounds that overseas markets like to believe have some sort of value. For example.
That aside, it's really a question of whether we sacrifice our living standards by x% now, or leave that obligation to our future selves or children, who would have to cut their living standards by y%. And whether x>y or x