shit, I wish I could pay my taxes in blood. Governments with national healthcare should give a tax credit for donating bodily materials minus hair and sperm or eggs. Donate blood, bone marrow, kidney, part of your liver or w.e. Plenty of times I hear that we don't have enough blood, shit I've even heard of sperm banks lacking sperm...
Shit, then the governments could sell the blood to other countries cause they'll probably have too much. Would be a great way to keep a bit of money flowing into our healthcare.