This isn't an academic exercise, or 'something we'll pass on to our grandchildren'. Assuming no recession, we're on track to hit $30T debt with $5T in revenues in a bit under 10 years.
Average borrowing rates at a mere 4% will mean $1.2T interest per year or about 25% of projected tax receipts. That doesn't factor in Social Security as far as I know.
Imagine SS, Welfare, the military, and all other programs getting cut 25%. The cities would burn, and our nation could barely defend itself, much less project force across the pond.
Pray that we don't get a recession. Tax receipts dropped 20% the last one, and we ran the equivalent of $2T deficits.
We are painting ourselves into an interest rate corner. That will be the 'wakey, wakey, eggs and bakey' moment.