dahsdebater, I appreciate your saying it, and if it makes you feel any better, while the Democrats have not quite been as out there as the Republicans in recent years, they have their own problems which amount, as Thomas Frank's great book "Listen, Liberal" makes clear, to having abandoned their electorate and their raison d'etre, so as to be in league with Wall Street. And they have managed to get in bed with the military-industrial complex as well.
Makes you yearn for Eisenhower and Kennedy, doesn't it? Even Nixon and Johnson start to look like great statesmen at this point.
But as to the debt/GDP growth ratio, while I support your position and your data makes sense, I think there is a missing element that makes almost all questions of public debt only partially rational: public investment.
In other words, some public debt is just money spent: paying salaries, expanding agencies that may or may not serve legit public purposes, but money spent on that purpose; some public debt is corruption and waste, though in the US this is actually pretty minor compared even to some democratic countries - I live in Italy, trust me on this; some is war and the secondary expenses of war - on this the real debate should be whether the particular war was necessary, legitimate and wise, and carried out as well as it could be given the circumstances - unneeded wars are sheer waste and worse, necessary wars for national defense or saving civilization is money well spent, and might, though might not, have some positive results in terms of a more productive society later on, through better international conditions economically and politically, better designed institutions, innovative technologies - the Civil War, but especially World War II fit this description pretty well. Other wars, not so much; finally, some public debt is investment pure and simple - building infrastructure, developing technologies, research and development, education and re-skilling the workforce. Anything that will make the economy more productive and wealthier in the future is not really just debt.
We always hear that government should be run as businesses are. Fine (not really but let's take this dare...) let's do that. When a company spends on R&D, or develops new products and borrows or raises capital to do so, it is not treated as pure expense, but as investment, and when a business buys or builds something it is treated as an asset. But school buildings, dams, electric grids, sewer systems, highways, hospitals. etc. are not allowed to be treated as assets in public accounting, just as expenditures. Same with military procurement.
So the raw numbers, and even therefore the yearly proportions of public debt are not as meaningful as they first appear. We should treat all government spending and procurement, and assets, and public investment (the railroads, the Erie Canal, the national roads before those, the TVA which provided electricity to the whole South, how productive would America be today without that? the land grant colleges, etc.) as not debt per se but investment, and so as an asset or as a productive expenditure just as private businesses do.