Given the effects of tax-funded wars on drugs, poverty, terrorism, etc., I'm in - as long as the money is spent on war against Earth, i.e. earnest efforts to make it heat up faster. I'm pretty sure we only need a few $Tn and 20 years to achieve cooling ;)
Sure, if you get billionaires to pay it, too.
You are willing to pay only if someone more wealthy that you pays, but you expect people who scrape for a living to pay more for their energy and fuel expenses because it's just a mild inconvenience for the greater good?